Long before there was a debate about same-sex anything, far too many heterosexuals bought into a liberal ideology about sexuality that makes a mess of marriage: cohabitation, no-fault divorce, extramarital sex, nonmarital childbearing, pornography, and the hook-up culture all contributed to the breakdown of the marriage culture. The push for the legal redefinition of marriage didn’t cause any of these problems. It is, rather, their logical conclusion. The problem is that it’s the logical conclusion of a bad train of logic.

