(509) Beyond the Individual: A Systematic Review of Interpersonal Theories of Sexual Wellbeing

Abstract Introduction Sexual wellbeing is inherently interpersonal, yet most conceptualizations have emphasized individual processes such as desire, arousal, or function. Recently, there has been growing interest in the relational and contextual factors of sexual well-being, along with the development of theories that account for the dyadic processes and interpersonal dynamics underlying it. This systematic review aims to provide the first comprehensive synthesis of existing theories and frameworks that conceptualize sexual well-being from an interpersonal perspective. Objective This review systematically identified and synthesized theories and conceptual frameworks defining sexual wellbeing as an interpersonal phenomenon. Specifically, we sought to (1) identify and describe original interpersonal theories of sexual wellbeing, and (2) map common theoretical foundations, predictors, and relational mechanisms across models. Methods The review followed the protocol pre-registered on the Open Science Framework (https://osf.io/hfd8w). We searched major databases for peer-reviewed articles that (a) proposed, tested, or expanded an interpersonal theory of sexual wellbeing and (b) conceptualized sexual function, satisfaction, and/or distress within a relational or dyadic framework. Studies were screened using predefined inclusion and exclusion criteria. For each record, we extracted data on theoretical framework, outcomes, interpersonal predictors, theoretical foundations, and whether the model was original or adapted. Descriptive synthesis classified unique interpersonal theories and summarized their conceptual overlaps and distinguishing features. Results Seventeen studies met inclusion criteria. We identified three different types of studies: (i) newly developed frameworks based on various empirical and theoretical influences; (ii) conceptual frameworks that had previously been established in other fields and were applied/adapted to the area of sexual well-being; and (iii) studies that empirically tested or extended one of the included theories or frameworks. Theoretical foundations were diverse, integrating social exchange theory, ecological systems theory, and interpersonal emotion regulation. Frameworks ranged from clinically oriented (e.g., Good-Enough Sex Model) to empirically testable models (e.g., IEMSS, DIADICS). Most emphasized sexual satisfaction as a relational outcome linked to individual wellbeing and relationship stability, underscoring the clinical and educational relevance of interpersonal processes in sexual therapy and couple interventions. Conclusions This review identified a growing but limited body of theories conceptualizing sexual wellbeing as an interpersonal construct. Collectively, these theories emphasize that sexual wellbeing is co-constructed through ongoing partner interactions rather than residing solely within the individual. Disclosure No