I think...heck, who knows. Some will not even consider the idea of marriage between same sex partners. Take that intellegent and reasonable Cheney for instance, he has a gay child which and has resoundingly, as has her mother, made it clear that he doesn't approve of her gay rights and that marriage is for hetrosexual partners only.
Nature is just not that way. I used to raise Australian finches. They would pair off in two, threes and any sort of combination you can think of. Unfortunately for our species, we are ruled by laws other than Natures and must get our rights by seeking them through the system.