Acker and Davis (1992) found that commitment was a reliable predictor of satisfaction in relationships (Acker and Davis, 1992) and Van Yperen and Buunk (1990) found that both men and women rated commitment to the relationship as the most important aspect of a relationship. Commitment is an important factor in relationship maintenance and in the absence of direct rewards may be the predictor of whether the relationship lasts (Lund, 1985).
Acker and Davis (1992) investigate that commitment is a trustworthy predictor of contentment in relationship. And another researchers also support that the commitment is the most essential aspect of relationship.