Does high jealousy prevent infidelity?

No. Counterintuitively, high jealousy can increase infidelity risk. Jealous people may cheat to regain control or self-esteem, or reactive formation (overcompensate). Some jealous partners are projecting their own infidelity urges. Real trust, not jealous monitoring, actually correlates with lower infidelity. Secure partners are more monogamous.

Can someone be jealous of their cheating partner?

Yes. Some cheaters use jealousy accusations as cover ("Why are you texting them? You're cheating on me!") or justify cheating as revenge ("You gave me reason to be insecure"). Others experience genuine guilt-driven jealousy toward partners. Jealousy doesn't prove innocence—examine actual behavior, not emotional intensity.

What does predict infidelity?

Research points to: lack of commitment, low relationship satisfaction, opportunity, sexual dissatisfaction, poor communication, insecure attachment (especially fearful-avoidant), substance abuse, and personality traits (low conscientiousness, high impulsivity, dark triad traits). Jealousy is a symptom of insecurity, not a cause or preventative of infidelity.

If my partner is jealous, does that mean they're cheating?

Not necessarily. Some jealous people are faithful and genuinely insecure. Others are projecting infidelity guilt. The only reliable indicator is their behavior and whether their jealousy is disproportionate to actual relationship threats. Pay attention to: do they trust despite trying to? Have they been faithful? Or is jealousy accompanied by their own secretive behavior?

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Jealousy and Infidelity: Does One Predict the Other?

Peter Kolomiets

|April 7, 2026|Updated Apr 13, 2026|8 min read

Jealousy and Infidelity: Does One Predict the Other?

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References

Wiederman, M. W. (1997). Jealousy and Extradyadic Relations Among Expressive and Inexpressive Husbands and Wives
Amato, P. R., & Rogers, S. J. (1997). Infidelity and Its Predictors in Long-Term Romantic Relationships
Barta, W. D., & Andalibi, N. (2018). Attachment and Infidelity: A Meta-Analysis

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