How Do I Tell if My Partner Is Cheating?
Infidelity is one of the most common and painful challenges couples face. While television dramas often depict obvious signs, in reality, indicators of cheating are more subtle. Research shows that suspicions of infidelity are among the strongest predictors of relationship dissolution (Buss & Shackelford, 1997).
A few early indicators to look for include:
Guarding behavior, particular with a phone or computer, access to a personal vehicle - that might reveal new behavior patterns;
A sudden increase in taking cash withdrawals, instead of using digital payment methods;
Greater attention to personal grooming, self-care, workouts, etc.;
Unexpected "emergencies" - at work, associated with friends/family - these can be used to hide time spent elsewhere.
Cheating behaviors often manifest not through dramatic discoveries but through shifts in relationship patterns. For example, a sudden increase in secrecy, unexplained absences, or altered intimacy may be red flags (Glass & Wright, 1992). Studies on deception in romantic relationships show that partners are generally poor lie detectors. Interestingly, as well as we think we know our partners, accuracy averages only slightly above chance, but what people do notice are inconsistencies in behavior (Vrij, 2008).
Cheating is rarely just about sexual behavior. Emotional betrayal, secrecy around communication (e.g., hidden texting), and defensive responses when questioned all create cracks in trust. Gottman (1994) notes that infidelity often grows out of unresolved dissatisfaction or poor conflict management.
While suspicion may arise from intuition, evidence-based steps include:
Observing patterns of inconsistency rather than isolated actions.
Maintaining open, non-accusatory dialogue about concerns.
Seeking counseling to address underlying relational dissatisfaction.
Infidelity damages trust, but suspicion without communication can be equally destructive. If you sense secrecy or behavioral shifts, approach the issue with openness rather than accusation.
👉 For structured steps in repairing trust and preventing separation, see my course Stop My Divorce or Breakup.
References
Buss, D. M., & Shackelford, T. K. (1997). Susceptibility to infidelity in the first year of marriage. Journal of Research in Personality, 31(2), 193–221.
Glass, S. P., & Wright, T. L. (1992). Justifications for extramarital relationships: The association between attitudes, behaviors, and gender. Journal of Sex Research, 29(3), 361–387.
Vrij, A. (2008). Detecting lies and deceit: Pitfalls and opportunities. Wiley.
Gottman, J. M. (1994). Why marriages succeed or fail. Simon & Schuster.
