This article investigates domestic sphere investments, that is, housework and childcare time, of spouses in two consecutive relationships and aims to identify potential sources of variation. Economic reasoning would predict a learning effect from one partnership to the next, and hence less specialization in the domestic sphere in the second relationship. Prevailing gender norms or institutions, on the contrary, may prevent such adjustments in the division of housework. In a fixed-effects regression analysis with the German SocioEconomic Panel, we compare time allocations of couples whose members experienced two consecutive partnerships from 1991 to 2012. Our results indicate that women's and men's successive matches differ from each other. Women and their new partners tend to reallocate time from housework to childcare while men's individual domestic investment patterns remain similar across unions. Highly educated women conform most to the economic rationale by reducing their marital investments significantly in their next partnership.