'Men and women tend to conduct their relationships differently and exhibit different preferences in their relationships. When the partnership diverges from sexual complementarity - that is, a man and a woman in relationship - decidedly sex-typed preferences are consolidated, not moderated. It means that same-sex couple are ironically more subject to deep-rooted gendered patterns and habits, their stated egalitarian attitudes aside. There is nothing political about this; it is just the empirical reality, one that sexual economics make ready sense of. If the sexes were a simple social construction, utterly malleable, we should see very little distinction in how men and women pursue relationships, how they act within them, how they act apart from them, what they prioritize about them and how they conclude them. But we see all of that.'
Mark Regnerus, Cheap Sex, p.158.