In the literature on sexual satisfaction, correlational studies abound, but there is very little theory tying the findings of these studies together. Of the theoretical models that do exist, the majority have utilized social exchange theories of sexual satisfaction. This study aimed at proposing a theoretical model of sexual satisfaction not grounded in exchange theory but in communal relationships theory. To test a communal model of sexual satisfaction, 189 male and female undergraduates completed the Mutual Communal Behaviors Scale (MCBS; Williamson & Schulz, 1995), the Exchanges Questionnaire (Lawrence & Byers, 1992), a measure of sexual satisfaction, and a measure of relationship satisfaction. The MCBS proved to be a superior predictor of relationship satisfaction as compared to the Exchanges Questionnaire, however, contrary to predictions, the MCBS was not a better predictor of sexual satisfaction. Implications for the construction of a communal model of sexual satisfaction are discussed.