"Oh." That wasn't at all the answer he was expecting. It had never really occurred to him, that someone from Charlie's era would already be thinking that marriage was an outdated institution. "I should have said that it's also acceptable to live with someone without marrying them. To have kids and spend your life together without ever making it official. It's not... required in the same way. I mean, depending on who you ask, of course. And..." he hesitates now, not sure if he should proceed, but deciding to go for it, "It's different in some other ways, too. Men can marry other men, and women can marry women."