Good in theory, but remember that gay men want sex with their own kind at any age. You'll have to be prepared to allow him to be himself and occasionally have flings with men. If you don't, then a) you're being selfish, and b) he'll cheat like crazy and hide it, and then you could be exposed to STDs and not find out about it until it's too late.
As a woman, make gay friends, but don't go for the gay partner thing. You're asking for trouble. We're fun to hang out with and go shopping with, and that stuff, but you're on dangerous territory otherwise. Gay men are for Christmas, not for life.