An evolutionary approach to gender differences in romantic relationships has pervaded the scientific literature, a trend mirrored in popular culture by Mars-Venus stereotyping. Three studies tested the accuracy of the popular notion that gender differences would emerge for the behaviors women and men want and receive from romantic partners in a sample of 375 students at a southeastern U.S. public university. Across the three studies, only one stable and robust gender difference emerged (desires regarding relationship support), as did several unstable gender differences. However, gender-role identity significantly accounted for nearly half of the variance in this one stable gender difference, challenging the viability of some evolutionary conceptualizations of gender differences and instead providing support for social constructionist and feminist perspectives.