Interpersonal emotion regulation during relationship conflict: Daily and longitudinal associations with couples' sexual well-being.

Relationship conflicts, which are common among committed couples, provoke negative emotions with implications for sexual well-being (i.e., satisfaction, desire, low distress). Couples might manage these emotions through extrinsic interpersonal emotion regulation (IER; attempting to influence the emotions of a romantic partner). In a preregistered dyadic, daily diary, and longitudinal study, we examined how four distinct IER strategies-responsiveness, cognitive support, physical presence, hostility-perceived by a romantic partner during relationship conflict related to both partners' sexual well-being. Over 28 days, community couples ( = 122; recruited between 2022 and 2023) completed brief measures of IER and sexual satisfaction, desire, and distress on days of relationship conflict and full versions of these measures 4 months later. Results may be generalizable to community couples in North America; however, improving the diversity of samples in future research would extend generalizability. Generally, greater perceived responsiveness, cognitive support, and physical presence IER on conflict days were each associated with higher daily sexual satisfaction and desire for couples, while greater perceived hostility was associated with lower daily satisfaction and desire. Greater perceived physical presence averaged across diaries was associated with one's own increased desire 4 months later. Most effects were similar for men and women; however, on days when women perceived greater responsiveness and cognitive support from partners, their partners reported more sexual distress, but there was no association between men's perceived IER and partners' distress. Findings expand models of IER to include sexual well-being and support IER as a target for interventions aimed at promoting sexual well-being. (PsycInfo Database Record (c) 2025 APA, all rights reserved).