I agree, it's disgusting. This is what religion does. Ironically the people who want to get married are initiating a religious ceremony.
Nevertheless, if they want to.... if you want to, you should be allowed to.
Is it possible to just go to another state, get married and come back? I'm pretty sure it is. But that shouldn't really be an issue in a sane, rational, science based world.

Or maybe you could just put rings on each other and say you're married.
I mean, is there actually any benefit of being recognised, by an irrational state, as married?

Also, if you haven't I recommend you watch the movie "Milk". About the gay rights activist Harvey Milk. I recommend it to all the gay people I know. Which is one not on the internet lol