DescriptionPrior research has mainly investigated how dating or married couples discussed sexual topics including disclosing their sexual history. Little attempt has been made to investigate such disclosure among hook ups. Additionally, to my knowledge, differences between different relational types have not been investigated in a single study. The current study investigated disclosure of sexual history among heterosexual long-term relationships, short-term relationships, and hook ups. Participants were university students as well as visitors to websites which hosted links to the online questionnaire. Results suggest that heterosexuals in such relational groups do discuss their sexual history though the honesty of such disclosure is in question. Additionally, a gender difference was found in what men and women believed their partners desired in an ideal partner. How participants presented themselves to their partners was significantly correlated with what they believed their partners ideal was. Results are discussed in the context of previous research including impression management literature. Possible sexual health implications are also discussed.