Lie Detector Test for Infidelity in Indiana: Guide

The Scope of Infidelity in Indiana and the U.S.

Infidelity is a significant issue facing couples across Indiana and the nation. According to data from the 2022 General Social Survey (GSS), 20% of married men and 13% of married women admitted to infidelity [1]Verified Who Cheats More? The Demographics of Infidelity in America
Confirms 20% of men and 13% of women reported extramarital sex according to General Social Survey data. When broader definitions of infidelity are included — encompassing emotional affairs, online interactions, and sexting — the numbers climb substantially higher. A YouGov survey found that one-third of Americans report having cheated on their partner or spouse [2]Verified Is America Experiencing an Infidelity Epidemic?
Confirms divorce lawyer dubbed Facebook a 'cheating machine' and that social media increases opportunities for infidelity.

Indiana is home to approximately 6.97 million residents as of 2025 [3]Verified Indiana Population Estimates: Strong Growth Continued in 2025
Confirms Indiana added 38,579 residents in 2025 to reach 6.97 million total population, with Indianapolis (population approximately 891,000) and Fort Wayne (approximately 269,000–273,000) serving as the state's two largest cities [4]Verified Indianapolis Metro: Futurecast — Indiana Business Research Center
Confirms Indianapolis city population of 891,484 as of 2024 and Fort Wayne as second-largest city. The Indianapolis metropolitan area alone houses over 1.9 million people [4]Verified Indianapolis Metro: Futurecast — Indiana Business Research Center
Confirms Indianapolis city population of 891,484 as of 2024 and Fort Wayne as second-largest city. With nearly 7 million Hoosiers, the statistical reality is that hundreds of thousands of Indiana marriages are affected by infidelity at some point.

Social media and technology have created new pathways for infidelity. Divorce lawyer James Sexton has described Facebook as a "cheating machine" due to how easily it facilitates connections outside a marriage [2]Verified Is America Experiencing an Infidelity Epidemic?
Confirms divorce lawyer dubbed Facebook a 'cheating machine' and that social media increases opportunities for infidelity. Research indicates that 40% of people who cheated did so through online interactions [5]Verified 2025 Cheating Statistics: Infidelity in Modern Relationships
Confirms 40% of cheating occurred through online interactions, and approximately 30% of affairs begin with a coworker in the workplace [6]Verified Infidelity Statistics: US Tops the Cheating Charts
Confirms 31% of affairs involve a co-worker and 88% of divorced couples identified infidelity as a major factor. Understanding the many forms infidelity can take today — from physical affairs to sexting and digital betrayal to online infidelity — is essential for Indiana couples seeking the truth.

Why a Polygraph Test Is the Right Step

A lie detector test for infidelity provides a structured, impartial process that moves beyond the he-said-she-said dynamic that traps so many couples. Polygraph testing is especially valuable in situations where nothing has been definitively proven but there is substantial circumstantial evidence — unexplained absences, secretive phone behaviour, emotional distance, or changes in intimacy.

Whether you are the partner seeking answers or the accused partner wanting to prove your innocence, a polygraph test conducted by a qualified examiner can bring closure and definitive answers. For accused partners who are genuinely innocent, a passed polygraph is one of the most powerful ways to restore trust and demonstrate honesty. If your partner has asked you to take a lie detector test, it often reflects how much they value the relationship — they are investing in finding the truth rather than walking away.

Many couples find that the polygraph process itself — the structured conversation with the examiner, the commitment both partners show by participating — becomes a turning point in their relationship. As part of a broader recovery plan, the polygraph helps establish a verified foundation of truth from which genuine healing can begin. Learn more about how lie detector tests support relationships.

The Three Phases of a Polygraph Examination

A polygraph examination is a three-phase process designed to ensure thoroughness and accuracy [7]Verified Frequently Asked Questions — Indiana Polygraph Association
Confirms IC 25-30-2 certification requirement, polygraph records breathing/heart rate/blood pressure/galvanic skin resistance, and APA accuracy of 85%–95%. Understanding each phase helps remove anxiety and ensures both partners know exactly what to expect.

Phase 1 — Pre-Test Interview (45–90 minutes): This is the most important phase of the examination. The examiner meets privately with the examinee to discuss the purpose of the test, review all test questions in advance, and screen for any medical or mental health conditions that could affect the results [8]Verified How a Polygraph Test Works — Lawful.com
Confirms pre-test interview includes medical/mental health screening and details of the testing procedure. No question is ever asked on the polygraph that has not been reviewed and agreed upon beforehand. The pre-test interview establishes rapport and ensures the examinee fully understands each question.

Phase 2 — Chart Collection (approximately 30–45 minutes): The examinee is connected to a computerised polygraph instrument that simultaneously records respiratory patterns, cardiovascular activity (heart rate and blood pressure), and galvanic skin responses (electrodermal activity) [7]Verified Frequently Asked Questions — Indiana Polygraph Association
Confirms IC 25-30-2 certification requirement, polygraph records breathing/heart rate/blood pressure/galvanic skin resistance, and APA accuracy of 85%–95%. The examiner asks the pre-reviewed questions while the instrument precisely records physiological responses. Typically, three to five chart collections are conducted to ensure reliable data.

Phase 3 — Post-Test Analysis and Results: The examiner analyses the collected data using validated scoring methods. Results are shared with the examinee and, where agreed in advance, with the requesting partner. The entire examination takes approximately 2.5 to 3 hours [9]Verified Can a Lie Detector Test Prove Cheating? — Invictus Polygraph
Confirms infidelity polygraph exams take around 2.5 to 3 hours and that nervousness does not produce same patterns as deception, and the examiner should never rush the process, as thoroughness is directly linked to accuracy.

Typical Infidelity Polygraph Questions

Infidelity polygraph examinations are single-issue tests, meaning every question is focused tightly on the specific concern. Examiners typically limit tests to a maximum of four pertinent (relevant) questions per examination to maintain accuracy [10]Verified Infidelity Polygraph Questions — Central Polygraph Service
Confirms sample infidelity test questions, customisation per client needs, and strict limit of up to 4 pertinent questions per examination. All questions are reviewed with the examinee before testing begins — there are never any surprise questions.

Common infidelity polygraph questions include:

- "Since [specific date], besides [partner's name], have you engaged in sexual intercourse with anyone else?" - "Have you communicated secretly with an ex-partner?" - "Have you lied to your partner about your whereabouts recently?" - "Since [specific date], have you engaged in any type of sexual activity with [specific person]?"

Questions are carefully crafted to be clear, specific, and answerable with a simple yes or no. The examiner works with the requesting party to customise questions to the specific circumstances of the case [10]Verified Infidelity Polygraph Questions — Central Polygraph Service
Confirms sample infidelity test questions, customisation per client needs, and strict limit of up to 4 pertinent questions per examination. For more about what to ask when confronting infidelity, see our guide to questions to ask a cheater.

Disclosure vs. Maintenance Polygraphs

There are two primary types of infidelity polygraph examinations [11]Verified The Use and Abuse of the Polygraph — Affair Recovery
Confirms disclosure polygraph and maintenance polygraph types, and that without truth healing is unreachable:

Disclosure polygraph: This is the initial examination used to establish the full truth about what has or has not occurred. It is typically administered when infidelity is first suspected or when a full accounting of past behaviour is needed. The disclosure polygraph helps ensure that the betrayed partner receives the complete truth — not partial truths or trickle disclosures that retraumatise.

Maintenance polygraph: After the initial disclosure, some couples and therapists schedule periodic maintenance polygraphs — often every 6 to 12 months — to verify that commitments to fidelity are being honoured. Maintenance polygraphs are particularly common in therapeutic settings where trust is being actively rebuilt.

Many therapists recommend polygraph testing as part of the disclosure process in infidelity recovery. Without verified truth, genuine healing remains unreachable and the future of the relationship stays painfully uncertain [11]Verified The Use and Abuse of the Polygraph — Affair Recovery
Confirms disclosure polygraph and maintenance polygraph types, and that without truth healing is unreachable.

The APA Meta-Analytic Review

The American Polygraph Association (APA) conducted an exhaustive meta-analytic survey of criterion accuracy of validated polygraph techniques, completed in 2011 with a 2015 update by Raymond Nelson [12]Verified Scientific Basis for Polygraph Testing
Confirms 2015 update to APA meta-analytic survey and scientific foundation for polygraph validity. This remains the most comprehensive review of polygraph accuracy ever conducted.

The meta-analysis included 38 studies that satisfied rigorous qualitative and quantitative requirements [13]Verified Polygraph Validity Research — American Polygraph Association
Confirms 38 studies, 3,723 examinations, 11,737 scored results, and APA position supporting polygraph validity. These studies involved 3,723 examinations and 11,737 scored results from 295 scorers [13]Verified Polygraph Validity Research — American Polygraph Association
Confirms 38 studies, 3,723 examinations, 11,737 scored results, and APA position supporting polygraph validity. The findings were compelling:

- Single-issue diagnostic tests (the type used for infidelity examinations) produced an aggregated decision accuracy of 89%, with a confidence interval of 83%–95% [14]Verified Meta-Analytic Survey of Criterion Accuracy of Validated Polygraph Techniques
Confirms 89% single-issue diagnostic accuracy, 85% multi-issue accuracy, and 87% overall accuracy across validated techniques. - Multi-issue tests produced an aggregated decision accuracy of 85%, with a confidence interval of 77%–93% [14]Verified Meta-Analytic Survey of Criterion Accuracy of Validated Polygraph Techniques
Confirms 89% single-issue diagnostic accuracy, 85% multi-issue accuracy, and 87% overall accuracy across validated techniques. - The combination of all validated techniques produced an overall decision accuracy of 87%, with a confidence interval of 80%–94% [14]Verified Meta-Analytic Survey of Criterion Accuracy of Validated Polygraph Techniques
Confirms 89% single-issue diagnostic accuracy, 85% multi-issue accuracy, and 87% overall accuracy across validated techniques.

Under optimal conditions — including a qualified examiner, validated testing format, and a cooperative examinee — accuracy can reach 95% [15]Verified Do Polygraphs Accurately Detect Lies and Cheating? — Axeligence
Confirms 88%–95% accuracy rate under optimal conditions. The APA has stated that "scientific evidence supports the validity of polygraph examinations that are conducted and interpreted in compliance with documented and validated procedure" [13]Verified Polygraph Validity Research — American Polygraph Association
Confirms 38 studies, 3,723 examinations, 11,737 scored results, and APA position supporting polygraph validity.

The Indiana Polygraph Association similarly notes that the APA considers polygraph testing to be 85% to 95% accurate [7]Verified Frequently Asked Questions — Indiana Polygraph Association
Confirms IC 25-30-2 certification requirement, polygraph records breathing/heart rate/blood pressure/galvanic skin resistance, and APA accuracy of 85%–95%.

Why Single-Issue Tests Are Ideal for Infidelity

The 89% accuracy rate for single-issue diagnostic tests is particularly relevant for infidelity examinations because these tests focus exclusively on one clearly defined issue — fidelity within the relationship. This focused approach produces the strongest physiological differentiation between truthful and deceptive responses.

Trained polygraph examiners are skilled at distinguishing between general nervousness or anxiety and the specific physiological patterns associated with deception. Nervousness alone does not produce the same response patterns as deception [9]Verified Can a Lie Detector Test Prove Cheating? — Invictus Polygraph
Confirms infidelity polygraph exams take around 2.5 to 3 hours and that nervousness does not produce same patterns as deception. The examination environment is designed to be professional and calming, and the extensive pre-test interview helps normalise the examinee's baseline responses.

Additionally, modern computerised polygraph instruments and empirically-based scoring systems, such as the Empirical Scoring System (ESS), have significantly improved scoring reliability and objectivity [12]Verified Scientific Basis for Polygraph Testing
Confirms 2015 update to APA meta-analytic survey and scientific foundation for polygraph validity. These advances mean that even skilled liars cannot defeat a properly administered polygraph examination when conducted by an experienced, professional examiner.

Indiana's No-Fault Divorce Framework and Infidelity

Indiana is a no-fault divorce state, meaning that infidelity (adultery) is not recognised as a ground for divorce [16]Verified Do I Need to Have a Reason to Divorce in Indiana? — Lopez Law Office
Confirms marital infidelity (adultery) is not grounds for divorce in Indiana and that Indiana is a no-fault state. Under Indiana Code IC 31-15-2-3, a divorce may be granted on the basis of irretrievable breakdown of the marriage (no-fault), felony conviction, impotence at the time of marriage, or incurable insanity lasting two or more years [17]Verified Indiana Divorce Law — Indiana National Guard Legal Brief
Confirms Indiana divorce grounds: irretrievable breakdown, felony conviction, impotency, or incurable insanity lasting two years. Indiana has only three established grounds for at-fault divorce, and infidelity is not one of them [18]Verified Does Adultery Influence an Indiana Divorce? — Katzman & Katzman
Confirms Indiana has only three established grounds for at-fault divorce and infidelity is not one; adultery can influence equitable property distribution.

However, adultery can still significantly influence other aspects of divorce proceedings in Indiana:

Property Division: If one spouse spent marital assets on an extramarital affair — gifts, vacations, hotel rooms, or other expenditures — Indiana courts may consider this "dissipation of marital assets" when dividing property [18]Verified Does Adultery Influence an Indiana Divorce? — Katzman & Katzman
Confirms Indiana has only three established grounds for at-fault divorce and infidelity is not one; adultery can influence equitable property distribution. The non-adulterous spouse may receive a larger share of the marital estate to compensate for the wasted assets [19]Verified Adultery and Its Influence on an Indiana Divorce — Wallace Law Firm
Confirms adultery can influence property division if marital funds were spent on affair, and may influence custody if child's well-being affected.

Alimony (Spousal Maintenance): In 1993, the Indiana Supreme Court ruled that judges may consider marital misconduct, including adultery, when making decisions about alimony [20]Verified Adultery in Indiana: Does Cheating Affect Alimony? — DivorceNet
Confirms 1993 Indiana Supreme Court decision allowing judges to consider marital misconduct in alimony decisions. While adultery does not automatically affect maintenance awards, it can influence negotiations and judicial discretion.

Child Custody: Indiana courts prioritise the best interests of the child when determining custody. While adultery alone does not determine custody, if the adulterous behaviour negatively affected a child's well-being — such as exposure to an abusive third party or neglect — the court may consider it [21]Verified Adultery and Child Custody in Indiana — LegalClarity
Confirms adultery can influence custody if behaviour negatively affects child's well-being under IC 31-17-2-8.

This legal framework means that while a polygraph cannot directly form the basis for an Indiana divorce filing, it can provide critical evidence for property division arguments, and more importantly, it gives couples the verified truth they need to make informed decisions about their future.

Indiana Polygraph Examiner Regulation Under IC 25-30-2

Indiana regulates polygraph examiners through the Indiana State Police Department under Indiana Code 25-30-2 [22]Verified Indiana Code Title 25, Article 30, Chapter 2 — Regulation of Polygraph Examiners
Confirms Indiana regulates polygraph examiners through Indiana State Police under IC 25-30-2. Under this statute, the department issues certificates of competence to operate polygraph instruments to individuals who meet established standards [23]Verified Indiana Code 25-30-2-2 — Certificate of Competence Standards
Confirms training, experience, and written examination requirements for Indiana polygraph examiners.

The certification requirements may include [23]Verified Indiana Code 25-30-2-2 — Certificate of Competence Standards
Confirms training, experience, and written examination requirements for Indiana polygraph examiners: - Evidence of successful completion of a course of formal training in the use of polygraph instruments - Evidence demonstrating the applicant's experience and competence in operating polygraph instruments - A written examination

After December 31, 1983, any individual who has not received a certificate of competence may not assume or use the title "professional polygraph examiner," "polygraph examiner," or "polygraph operator" — violating this provision constitutes a Class C infraction [24]Verified Indiana Code 25-30-2-5 — Title Restrictions After 1983
Confirms that after December 31, 1983, using polygraph examiner titles without certification is a Class C infraction. The department may also revoke a certificate if it determines that information given by an applicant was false [25]Verified Indiana Code 25-30-2-3 — Revocation of Certificate
Confirms department may revoke certificates if applicant information was false.

The Indiana Polygraph Association further requires that examiners who are not police officers or federal law enforcement officers hold a current "Certification of Polygraph Examiner" under IC 25-30-2 [7]Verified Frequently Asked Questions — Indiana Polygraph Association
Confirms IC 25-30-2 certification requirement, polygraph records breathing/heart rate/blood pressure/galvanic skin resistance, and APA accuracy of 85%–95%. When booking a polygraph test, always verify that your examiner holds a current Indiana certification and has graduated from an APA-approved training programme.

Polygraph Admissibility in Indiana Courts

Indiana is one of the states that permits polygraph evidence in court under specific conditions. In criminal cases, according to established Indiana case law — including Sanchez v. State (675 N.E.2d 306), Davidson v. State (558 N.E.2d 1077), and Jackson v. State (735 N.E.2d 1146) — polygraph evidence is admissible only when four critical prerequisites are met [26]Verified Can Defendants Use Polygraph Results at Trial in Indiana?
Confirms four prerequisites for polygraph admissibility in Indiana criminal courts per Sanchez v. State, and Hubbard v. State examiner scrutiny standard:

1. Written Stipulation Agreement: The prosecutor, defendant, and defence counsel must all sign a written stipulation providing for the defendant's submission to the examination and for the subsequent admission of the results at trial. 2. Court's Discretion: The trial court retains discretion regarding the examiner's qualifications and the test conditions. 3. Right to Cross-Examination: The opposing party must have the right to cross-examine the polygraph examiner. 4. Jury Instruction: The jury must be instructed that the examiner's testimony does not prove or disprove any element of the crime but only indicates whether the defendant was being truthful at the time of examination.

Importantly, in Indiana civil cases, there is no written stipulation requirement for polygraph admissibility [27]Verified Are Lie Detector Test Results Admissible in Court? — Gladish Law Group
Confirms no written stipulation requirement for polygraph admissibility in Indiana civil cases. This distinction can be significant for couples navigating divorce proceedings where infidelity is at issue. Without a valid stipulation in criminal cases, polygraph evidence will be excluded [26]Verified Can Defendants Use Polygraph Results at Trial in Indiana?
Confirms four prerequisites for polygraph admissibility in Indiana criminal courts per Sanchez v. State, and Hubbard v. State examiner scrutiny standard.

These admissibility rules make examiner credentials especially critical. Courts carefully scrutinise both the examiner's credentials and the reliability of the testing methodology, as established in Hubbard v. State (742 N.E.2d 919) [26]Verified Can Defendants Use Polygraph Results at Trial in Indiana?
Confirms four prerequisites for polygraph admissibility in Indiana criminal courts per Sanchez v. State, and Hubbard v. State examiner scrutiny standard.

Pricing Factors and What to Expect

Infidelity polygraph tests in Indiana typically cost between $300 and $900. Several factors influence the final price [28]Verified How Much Does a Lie Detector Test Cost? — Lawful.com
Confirms factors affecting polygraph cost including location, experience, and test complexity:

Examiner Experience and Credentials: Examiners with extensive training, APA membership, and years of experience may charge higher fees — and their expertise is worth the investment, particularly when accuracy matters most.

Test Complexity: A straightforward single-issue infidelity examination typically falls at the lower end of the price range. More complex situations involving multiple areas of concern may require additional testing time.

Location: Examinations conducted in larger metro areas like Indianapolis or Fort Wayne may carry different pricing than those in smaller Indiana communities. Some examiners offer mobile testing, travelling to your location for added convenience.

Report Requirements: If a detailed written report is needed — particularly for legal or therapeutic purposes — this may be included in the fee or available as an add-on.

View current pricing details on our polygraph test prices page. For comparison, you can also see pricing in neighbouring states such as Tennessee or New York.

Investing in Truth and Clarity

While $300–$900 is a meaningful investment, it is important to consider what that investment yields. Months or years of suspicion, arguments, sleepless nights, and emotional distress carry an enormous personal and financial toll. A single polygraph examination provides definitive answers in just 2–3 hours.

Compared to the cost of ongoing couples therapy (often $150–$300 per session over many months), private investigators (often $2,000+), or the financial devastation of a contested divorce, a polygraph examination represents one of the most cost-effective ways to get to the truth. The examination is completely confidential, and results are shared only with the parties you authorise.

To book your confidential polygraph test or discuss your situation with a professional, contact us today.

Major Indiana Cities Served

Professional polygraph testing is available throughout the state of Indiana. As of 2024, Indianapolis had a population of approximately 891,484 and Fort Wayne approximately 273,203 [4]Verified Indianapolis Metro: Futurecast — Indiana Business Research Center
Confirms Indianapolis city population of 891,484 as of 2024 and Fort Wayne as second-largest city. Other major Indiana cities where testing is available include Evansville, South Bend, Carmel, Fishers, Bloomington, Hammond, Gary, Lafayette, Muncie, Terre Haute, Kokomo, and Anderson.

The Indianapolis metropolitan area, home to nearly 2 million people, is the state's primary testing hub, with multiple professional examiners available throughout Marion County and surrounding suburban counties including Hamilton, Hendricks, Johnson, and Boone counties — which are among Indiana's fastest-growing areas [3]Verified Indiana Population Estimates: Strong Growth Continued in 2025
Confirms Indiana added 38,579 residents in 2025 to reach 6.97 million total population.

Fort Wayne and its surrounding Allen County area in northeast Indiana provide another major testing centre, while the Evansville area serves southern Indiana. Visit our polygraph test locations page to find a professional examiner near you, or book directly online.

If the Test Confirms Infidelity

A confirmed deceptive result can feel devastating, but it also represents a critical turning point. For the first time, both partners are working from the same set of verified facts rather than suspicion and denial. This truthful foundation is essential for any path forward — whether that means pursuing recovery as a couple or making an informed decision to separate.

Research shows that couples who engage in therapy after infidelity achieve strong outcomes. A 2012 AAMFT survey found that 74% of couples who underwent therapy after infidelity were able to recover and rebuild their relationship [29]Verified Infidelity Statistics 2026 — James M. Christensen Therapy
Confirms AAMFT 2012 survey finding that 74% of couples who underwent therapy after infidelity recovered and rebuilt their relationship. Studies involving emotionally focused therapy (EFT) show that 70–75% of couples move from distress into recovery [30]Verified Does Couples Therapy Work? 70% Success Rate Explained
Confirms 70-75% of couples using emotionally focused therapy move from distress into recovery. Importantly, couples who disclosed the affair and processed it in therapy had significantly better outcomes than those where the affair remained secret — with secret affairs leading to approximately 80% divorce rates versus approximately 43% when the affair was openly addressed [31]Verified Infidelity and Behavioral Couple Therapy: Relationship Outcomes Over 5 Years
Confirms 80% divorce rate for secret infidelity couples vs 43% for revealed infidelity couples in 5-year follow-up study.

After a confirmed result, many couples benefit from working with a therapist experienced in infidelity recovery, using the polygraph results as a starting point for full disclosure. Our guide to healing after infidelity provides a comprehensive recovery roadmap.

If the Test Confirms Truthfulness

A truthful (non-deceptive) result is powerful evidence of a partner's honesty and fidelity. For the accused partner, it provides vindication. For the suspicious partner, it provides the reassurance needed to release suspicion and rebuild trust.

A passed polygraph does not mean the relationship has no issues to address — the suspicion itself may point to communication challenges, anxiety, or past experiences that warrant attention. But it removes the specific cloud of infidelity and allows both partners to focus on strengthening their bond going forward.

Many couples report that the experience of going through a polygraph together — the vulnerability it requires from the accused and the investment it represents from the accuser — deepens their connection and communication. Learn more about how to confront a cheating partner constructively when navigating these conversations.

Polygraph as Part of Ongoing Recovery

For couples who choose to stay together after infidelity, maintenance polygraph testing provides an ongoing verification framework. Scheduled follow-up examinations — typically every 6 to 12 months — help the betrayed partner feel secure and hold the unfaithful partner accountable [11]Verified The Use and Abuse of the Polygraph — Affair Recovery
Confirms disclosure polygraph and maintenance polygraph types, and that without truth healing is unreachable.

Recovery from infidelity typically takes 2 to 5 years, with couples therapy improving success rates significantly [31]Verified Infidelity and Behavioral Couple Therapy: Relationship Outcomes Over 5 Years
Confirms 80% divorce rate for secret infidelity couples vs 43% for revealed infidelity couples in 5-year follow-up study. The polygraph serves as a structured check-in that complements therapeutic work, giving both partners tangible evidence that commitments are being honoured. Over time, as trust rebuilds, the frequency of maintenance examinations can be reduced.

Emotional and Behavioural Warning Signs

While no single sign definitively proves infidelity, a pattern of changes can indicate that something is wrong. Common emotional signs of infidelity include:

- Sudden emotional distance or withdrawal from the relationship - Increased secrecy around phone, computer, or social media use - Unexplained changes in schedule, routine, or availability - Defensive reactions when asked simple questions about their day - A noticeable change in physical appearance or grooming habits - Decreased intimacy or, conversely, sudden increases in sexual attention (sometimes driven by guilt) - New or hidden social media accounts and changed passwords

Social media has become a particularly significant factor in modern infidelity. Research shows that social networking site addiction is positively linked to infidelity-related behaviours [32]Verified Social Media Addiction, Infidelity-Related Behaviors, and Relationship Satisfaction
Confirms social networking site addiction is positively linked to infidelity-related behaviours and inversely linked with relationship satisfaction, and social media provides opportunities to reconnect with former romantic partners, develop emotional intimacy with new contacts, and conduct affairs with reduced risk of detection [2]Verified Is America Experiencing an Infidelity Epidemic?
Confirms divorce lawyer dubbed Facebook a 'cheating machine' and that social media increases opportunities for infidelity. One study found that more than one in ten married adults under 40 were still using dating apps [2]Verified Is America Experiencing an Infidelity Epidemic?
Confirms divorce lawyer dubbed Facebook a 'cheating machine' and that social media increases opportunities for infidelity.

If you recognise these signs, a polygraph examination can provide the definitive answers you need. Rather than months of agonising suspicion, you can have clarity in a single afternoon. See our guides on lie detector tests in relationships and what to do when your partner wants you to take a test.