Emotion regulation difficulties have been found to predict relationship satisfaction in adult samples, yet little is known with regards to the processes explaining these associations in adolescent dating relationships. Furthermore, among the available literature, most studies only consider one romantic partner. To address this gap, this study used a dyadic approach and considered the role of conflict resolution strategies (i.e., positive problem-solving, withdrawal, and conflict engagement) in the association between adolescents’ emotion regulation and romantic relationship satisfaction. A sample of 117 heterosexual adolescent couples from Québec, Canada, was recruited (Mage = 17.68, SD = 1.57; 50% female, with 40.60% being in their first romantic relationship, and 48.29% reporting that this relationship was ongoing for more than a year). Results from APIMeM analyses indicated no direct effects between emotion regulation and relationship satisfaction. Significant indirect actor effects indicate that boys and girls with greater emotion regulation difficulties were less satisfied with their relationship via more withdrawal strategies. A partner effect emerged for girls, such that their boyfriend’s regulation difficulties and greater withdrawal had a negative impact on their relationship satisfaction. This study identifies withdrawal as a key strategy in explaining the associations between emotion regulation difficulties and relationship satisfaction. Furthermore, it highlights that within adolescent couples, boys’ withdrawal can be particularly deleterious to relational well-being.