The argument has been advanced that in intimate self-disclosure sex differences occur with males being less intimately disclosive than females--especially to other males. The argument posits that males who have homophobia (a fear of sexual contact with members of the same sex) might view intimate self-disclosure as a homosexual act and thus avoid it. A self-disclosure questionnaire and a homophobia index were completed by 305 college students. Analysis of variance performed on the data collected revealed significant sex differences in self-disclosure scores. These differences occurred for four dimensions: intimacy, amount, honesty, and willingness. For these dimensions, females proved to be more disclosive to best friends of the same sex than did males. For the same dimensions, males were consistently more disclosive to the opposite sex than to the same sex for both best friends and acquaintances than were females. Little distinction was found in how disclosive females were to the same sex or opposite sex, especially when the target was a best friend. Despite these sex differences, however, homophobia was not found to be significantly related to self-disclosure score. (FL)