The rise of social networking sites (SNSs) has revolutionized the way that individuals connect and interact with other. By building on boundary theory and social exchange theory, this study investigates whether cyberspace coworker friendships transition into positive organizational outcomes in the workplace. Using the case of Facebook, a multilevel model is proposed, leading from SNS coworker friendship to job embeddedness and satisfaction through the mediating role of instrumental coworker support. Furthermore, the moderating effect of team-level task interdependence on this life–work transition is scrutinized. This study fills the void of inadequate empirical research on boundary crossing, and enriches literature that predominantly centers on the negatively valanced outcomes of such transitions. It also advances the literature on how team-level task interdependence could moderate the role of cyberspace coworker friendships. Results pave the way for both organizations and employees to embrace fulfilling outcomes through life–work social exchanges.