The present investigation examines how self-monitoring relates to (i) perceived balance of power and influence in close relationships and (ii) the association between perceived power balances and relationship quality. Two hundred twenty-seven participants (M = 19 years; 164 women, 63 men) completed the 18-item Self-monitoring Scale, measures of perceived balance of power and influence in their romantic relationships, and measures of relationship quality (e.g. closeness, satisfaction). Low self-monitors tended to perceive symmetrical influence, and their relationship quality was highest in symmetrical relationships. In contrast, high self-monitors were more likely to perceive asymmetrical influence; however, the negative association between asymmetrical influence and relationship quality was attenuated. We discuss how interpersonal power and influence concerns may manifest themselves in the social worlds of low and high self-monitors.