Romantic partners often have differing levels of sexual interest. In these situations, lower desire partners may engage in sex for avoidance goals (e.g., to avoid disappointing their partner), which are associated with negative relational outcomes. An alternative strategy to sustain relationship quality may be to decline a partner’s sexual advances in positive ways. In two experimental studies and a dyadic daily experience study with a longitudinal follow-up, we examined the relationship outcomes of positive rejection compared to avoidance-motivated sex. Across studies, when people engaged in positive rejection, both they and their partner did not experience lower levels of relationship satisfaction compared to when they had sex for avoidance goals, although this was not true for sexual satisfaction. Chronic pursuit of sex for avoidance goals did, however, have detrimental consequences over time, whereas positive rejection helped sustain relationship satisfaction. Results suggest positive rejection behaviors may be a viable alternative to avoidance-motivated sex.