Contrary to popular media claims that college hookup culture has made romantic relationships obsolete, research indicates many college students see hookups as a pathway to relationships. However, relatively few college hookups actually produce relationships. This study used a sex market framework to explore correlates of college students' interest in future hookups and relationships with hookup partners across other-sex and same-sex hookup markets. Using Online College Social Life Survey data (N = 10,141) we explored variables classified in the following contexts that may shape choices in a sex market: demographic characteristics, the hookup dyad, the hookup event, post-hookup reactions, attitudes toward hookup partners, and hookup opportunity structures. Logistic regression analyses indicated post-hookup reactions (e.g., satisfaction, emotional responses) explained the highest percentage of variance in interest in a subsequent hookup (56% to 61% across markets) and interest in a relationship (35% to 45% across markets). Although past research suggests there are different markets for other- and same-sex hookups, these findings suggest similarity in contexts that may shape interest in relationship formation among other-sex and same-sex hookup markets. Suggestions for fostering positive relationship development on campuses are discussed.