Friends with benefits relationships (FWBRs) occur when two friends who are not in a committed romantic relationship engage in ongoing sexual activity (i.e., oral sex and/or intercourse) over a period of time. The purpose of this study was to examine the demographic and psychosocial characteristics of college men involved in FWBRs (N = 407) using s short-term prospective study design. After including several relevant variables (e.g., race/ethnicity, year in school, age, religious service attendance, relationship status, casual sex attitudes, relationship awareness, alcohol use), men were less likely to be involved in a FWBR during the semester if they were in a stable committed romantic relationship and were more likely to do so if they held more positive attitudes towards casual sex, had a more extroverted personality, and had FWBR experience in the 12 months prior to the study. Implications for relationship education for emerging adult college men are discussed.