This paper presents the results of a survey on the sexual behavior of Colombian high school students. It documents significant gender differences in the sexual behavior of Colombian adolescents as compared with the more egalitarian sexual behavior of their American and European counterparts. The study indicates that prostitutes are playing a decreasing role in the sexual lives of Colombian males as a result of a trend toward premarital coital permissiveness among Colombian females. The findings also support previous studies which indicate that there are intrinsic gender differences in the intensity and frequency of sexual desire.