Sexual fantasies about one's partner versus someone else: Gender differences in incidence and frequency

Gender differences in the proportion of sexual fantasies involving someone other than a current partner (extradyadic fantasies) were explored using an anonymous questionnaire administered to 349 university students and employees (ages 18 to 70) who reported that they were currently in heterosexual relationships. Eighty‐seven percent of the sample (98% of men and 80% of women) reported having extradyadic fantasies in the past 2 months. A hierarchical regression analysis revealed that, compared to women, a larger percentage of men's sexual fantasies were extradyadic even after controlling for the effects of relationship length, number of prior sex partners, any prior incidents of actual extradyadic sexual behavior or “cheating” on the current partner, and socioeconomic status. In addition, it was found that the proportion of extradyadic fantasies increased as a function of relationship length for both genders, while prior incidents of extradyadic sexual behavior and a larger number of prior partners were associated with a higher proportion of extradyadic fantasies for women only.