You know, I hate to sound like a pessimist, but I don't get why everyone's focused on such trivial social issues like 'group marriage' or 'extraterrestrial rights.' I mean, really. Regardless of whether or not they're acceptable for us to embrace, when is our government ever going to have to deal with situations that warrant these policies?
Real marriage is a union between one man and one woman. If you don't like that, then feel free to hold your own views on the subject.
You heard the man. It doesn't matter if a marriage is between two people who were divorced twenty times. It doesn't matter if the nature of the marriage is purely sexual. It doesn't matter if people got married out of guilt or family obligation. All that matters is that it's between one man and one woman. Anything else is just, you know, offensive.