Right, because treating same sex couples equally under the law--that is to say, not kicking them out of the ambulance; not having their homophobic relatives contest their wills and leave their widows and widowers nothing--somehow instantaneously nullifies and "fucks up" your heterosexual marriage, your rights, your recognized status under the law.
Are those rights now DENIED to you simply because they are recognized for same sex couples? You still don't understand. Your so-called "right" to be a pompous, bigoted asshole; your right to treat a group of people as inferior under the law, is not a right. The only thing that gets fucked up here is that you don't get to take out your prejudices against gays and lesbians and call that your "religious freedom."
This idea of needing to "protect heterosexual marriage" because it is somehow "threatened" by men marrying men, and women marrying women, is really a statement to the effect that straights regard their own marital bonds to be so fragile, so tenuous, that they need the security of denying other people their rights, to say to other people how THEY should be recognized when that has no bearing on their own status in society. How pathetic for you that you feel that way.