Sex is integral to maintaining a satisfying long-term romantic relationship such as marriage. It is thus important to identify the factors that promote sexual satisfaction in these relationships. To this end, we examined the extent to which a crucial evolved individual difference—sexual disgust sensitivity—impacts people’s sexual satisfaction and relationship satisfaction. Using a two-year longitudinal study of 102 newlywed couples (204 individuals), we demonstrated that, rather than exerting main effects, the interaction of both couple members’ sexual disgust sensitivities was indirectly associated with marital satisfaction through sexual satisfaction. People whose partners’ sexual disgust sensitivities were relatively similar (versus dissimilar) to their own maintained higher levels of sexual satisfaction across the first two years of marriage, which was associated with similarly elevated marital satisfaction. Not only do these findings highlight the importance of integrating evolutionary perspectives and relationship science, they underscore the value of conducting dyadic research to examine the unique intersection of both couple members’ characteristics for people’s relationship outcomes.

性是维持令人满意的长期浪漫关系（如婚姻）不可或缺的一部分。因此，确定在这些关系中促进性满足的因素很重要。为此，我们研究了一个重要的进化个体差异——性厌恶敏感性——对人们的性满意度和关系满意度的影响程度。使用对 102 对新婚夫妇（204 个人）进行的为期两年的纵向研究，我们证明，夫妻双方的性厌恶敏感度之间的相互作用并没有产生主效应，而是通过性满意度与婚姻满意度间接相关。伴侣的性厌恶敏感度与自己的性厌恶敏感度相对相似（而非不同）的人在婚姻的头两年保持较高的性满意度，这与同样提高的婚姻满意度有关。这些发现不仅强调了整合进化论观点和关系科学的重要性，还强调了进行二元研究的价值，以检查夫妻双方特征的独特交集对人们关系结果的影响。