Religious individuals often assume that their beliefs promote strong romantic relationships. Yet the empirical evidence is mixed. To better understand this association, this study examined religious orientation as a moderator within the investment model of commitment. A community sample of 84 couples completed measures on religious orientation and commitment as part of a larger study on romantic relationships. The findings indicate that although both religious motivations promote commitment, they do so differently. Specifically, intrinsic religious orientation buffered the negative effects of (...) dissatisfaction in a relationship; whereas an extrinsic religious orientation attenuated the extent to which alternatives to the relationship influenced commitment. Future research in this area should consider religious orientation, rather than overall religiosity, and examine specific predictors of relationship commitment to provide greater clarity on how religiosity influences romantic relationships. Implications for counseling individuals with religious beliefs are also discussed. (shrink)