There is nothing regarding the constitution in this debate. This debate is about a word. That word is Marriage. You are unwilling to settle for a civil union because in your sin you'd prefer to feel that everyone else approves of you guess what jack that will never happen. Get over it. Take what you can get and move on.
The 14th amendment says it does.
People like you are the first ones to shout "sin!" while pretending you are free of sin. You're the kind of hypocrite that embarrasses Christianity and you're the kind of Christian that does nothing but try to make others feel bad. You're also the worst kind of American because you want to use the government to force your theology on others while ignoring the basic principles of equality that is the basis for our Constitution.
You know nothing of Christ as demonstrated by your bigotry and you know nothing of America as demonstrated by your claim this issue has nothing to do with the Constitution.
...and you're just throwing a temper tantrum because nobody ever taught you how to argue your opinions in a mature fashion.
No constitutional amendment mandates the creation of a law. The 14th Amendment, loosely speaking, says the law has to pertain to everyone, but it doesn't have to appease everyone. If the law said "gay people can't marry", that would be unconstitutional. However, since the law says marriage is defined as one man and one woman, that might not appease those who would want to marry someone of the same sex, but it's not unconstitutional.
Also, you don't have to permit sin to be a Christian or appeasing in the eyes of God. You shouldn't be a hypocrite and overly judgmental, but even Christ had standards. He wasn't just some long-haired hippie standing around with an olive branch. Remember the story of the adulteress woman who was about to be stoned? Yeah, he stopped the people from stoning her, but he also told her to go forth and sin no more. So people who rightly think homosexuality is a sin aren't compelled to support them in that. If anything, you're the one with the issues, because you're only worried about being popular.