During a time of highly enforced physical separation, people are finding themselves increasingly more isolated and alone. The covid-19 global pandemic has affected citizens of nearly every country in the world. However, the degree to which people experience loneliness and other well being-related outcomes in the wake of increased isolation may be culturally variable. Indeed, there is strong evidence suggesting that feelings of loneliness and psychological distress may be dictated by culture. For instance, individualists tend to report greater personal loneliness than collectivists. We posit that these cultural differences are explained by Relational Mobility (RM; the degree to which individuals in a society can enter and leave interpersonal relationships as desired; Schug, 2010). The current study aims to explore specific links between relational mobility and well-being outcomes during the pandemic (e.g., personal loneliness, fear of missing out, stress, coping and mental health). We are also interested in exploring people’s social expectations and technology use during covid-19 as possible mediators and moderators of these links. To yield a diverse sample (in terms of both relational mobility and nationality), we aim to recruit participants from Japan (typically low in relational mobility), Mexico and the U.S. (both typically high in relational mobility). We chose Japan and Mexico because both are considered collectivistic countries/cultures but differ in relational mobility; thus, this permits an examination of cultural values and relational mobility in these processes.