Commitment is one of the most frequently cited descriptors of relationships. However, commitment can mean different things to different people. A common problem for many couples is in the assumption that one's own personal meaning of commitment is the same as one's partner. This article provides an opportunity for couples to interview each other, to learn more specifically just what is in personal “data banks” regarding commitment in their relationships. Although the authors acknowledge that relationship commitment is not static or never changing, they have devised the Couples Commitment Interview to help couples learn more about their conceptions of commitment. The authors also discuss representative research relative to commitment.