Quote of the Day
For heterosexuals, rates of infidelity are four times higher than the rate of open relationships. By contrast, for sexual minorities (with the exception of lesbians), rates of open relationships are higher than the rate of infidelity.
Justin Lehmiller @JustinLehmiller
Posted on X, March 7, 2026
See also Rates of Consensual and Nonconsensual Nonmonogamy Among Heterosexual, Gay, and Bisexual Adults – Sex and Psychology. This article gives us the numbers:
- Overall prevalence of infidelity: about 8% of heterosexual participants, 14% of gay participants, 6% of lesbian participants, 18% of bisexual participants, and 6% of those who described “other” sexualities reported nonconsensual nonmonogamy (defined here as agreeing to be sexually exclusive with a partner, but one or both partners cheated or had an affair).
- Overall prevalence of open relationships: 2% of heterosexual participants, 32% of gay participants, 5% of lesbian participants, 22% of bisexual participants, and 14% of those who reported “other” sexualities.
The way I initially read the post on X was that open relationships result in lower the rates of infidelity. But reading the article I find that even with a higher prevalence open relationship as sort of a “safety valve” the infidelity rates are actually higher.
I’m not sure what to conclude about this other than, “That’s interesting.”
The data suggest that men are far more likely to stray than women, which evolutionarily speaking makes sense. But it doesn’t say so explicitly. The missing data point: for man/women couples, which partner(s) cheated?