I have no problem. Like, they can do what they want, it's no one's place to judge them on that, or take away a right to marry. So really, why does it matter?
Sorry for my foul language, but why the fvck would someone think that it's wrong to get married to the one you love and cherish?
It's not exactly their (nor is it my) bussiness what other people do with and in their relationships.
If you want to get married, then you should be able to get married without having some religious person telling you why you're such a "freak" and how god will send you to Hell.
I just can't find a legitimite reason for someone being against this...