In the era of same-sex marriage—which it is difficult for some people to acknowledge—we are not talking about a single model of marriage. We could be talking about cohabiting, heterosexual, homosexual and lesbian, gay, bisexual, and transgender people. It varies in the world we now live in.
I'm not sure which lesbians and gay men aren't homosexuals. Perhaps he's going over the turf a few times to try and make sure.