--- - |2 Abstract This study measured the effects of adult attachment styles on sexual behavior using Hatfield and Rapson's unified love schema theory. According to this theory, there are six love schemas, or adult attachment types. Four types parallel other four‐category adult attachment schemas, and two types not measured in previous research are uninterested in romantic relationships. Clear differences were found in sexual desires and behaviors of people possessing five of the love schemas. The results suggest the importance of pursuing the effects of attachment style on sexual behavior, as well as the utility of an attachment schema that allows individuals to classify themselves as disinterested in romantic relationships. - Personal Relationships, Page 111-123, October 2018.