The chapter focuses on partnership dissolution in the course of international migration. Rather than studying mobility outcomes following the dissolution of a partnership, we ask under which conditions international migration increases the risk of separation among couples. Our analysis includes individuals in marital and non-marital relationships who leave Germany and move to another country or re-migrate back to Germany. Based on the first two waves of the German Emigration and Remigration Panel Study (GERPS), our logistic regression estimations show that non-egalitarian, non-synchronised migration patterns are important predictors of union dissolution for male and female emigrants and remigrants. Until now, the role of family migration on the subsequent stability of a union has been largely underexplored, and this chapter contributes to closing this research gap.