I can think of three reasons he won't reply to your texts:
1) He's embarrassed about what happened.
2) He's afraid you think it meant more than it did, and now you expect him to dump his girlfriend and date you instead.
3) He's scared to death that his indiscretion will be found out by his girlfriend, so he's avoiding you.
If he were just some random guy whose face you sucked at a party, I'd say just let it go. But since you guys are friends, it's a different situation. He's certainly not acting like a friend by ignoring your texts, and part of me wants to say don't contact him again. You've reached out more than once, so let him come to you when he's ready. You've done your part.
On the other hand, situations like this are how friendships die--almost by accident. He's ashamed, you're hurt, and the next thing you know, three months have passed and you haven't spoken. The friendship starves to death through neglect; a long bond is wiped out by one drunken night. I hate to see that happen if you really care about this guy and want to keep him as a friend.
But you have to make that call; it all depends on whether or not you think the friendship is worth saving, and if you're willing to continue barking up his tree despite his silence. You might not be, and that's totally fine.
If you do choose to contact him again, just tell him exactly what you've told me: you view the incident the same way he probably does--as a drunken indiscretion--and you don't have any designs on him, or any desire to break up his relationship with his girlfriend. All you care about is keeping him as a friend. You're both embarrassed, but that will pass, and you never have to talk about the incident again. Tell him you hate to lose him as a friend simply because you guys got drunk and did something foolish. You don't judge him, and you hope he doesn't judge you.
Then let that be the end of it. If he ignores you again, so be it--the friendship is over by his choice, not yours. Don't contact him again. Hopefully he can get over it, but if not, it's his loss. Whatever happens, you'll live.
Cary,
I asked this question (apparently I'm Kissy Face now haha) and I'd like to thank you for the great answer (as per usual). Anyways, after over-analyzing this situation to death, I'm guessing he's avoiding me for reasons either #2 or #3, I'm not sure.
But yeah, I don't think it really matters to me that much anymore. A few texts later & he still hasn't answered. And we actually work together (well, we're both 19, so it's a part-time retail job, and I only work one day a week and he usually doesn't work on that day, so I consider us more friends than coworkers..), tonight was my last night working there before I changed jobs, and he was scheduled to work then also, but guess who called in sick? ..Guy's putting WAY too much effort into avoiding me, and honestly I don't think I even want to be friends with someone like that. I mean we've been friends for practically two years and he never wants to see me again because of one drunken night? No thanks.
I don't blame you. He sounds like he's 14. Good riddance.
Or he could be sick? Parties in the winter time aren't exactly riddled with bunches of perfectly healthy people. Remember in early schools they would teach you how a lot of viruses could be inside of you even when you didn't realize it? Those Germ-X commercials where the kids, seemingly normal, were actually leaving strange moving particles on telephones? That's because everyone has germs inside of them and you're going to give a bunch to everyone no matter what. Heck, YOU could be the reason he's sick since you made out with him. Ever think of that?
He will probably contact you within another week. If you both agree it was just a simple mistake, and that he's your friend, he will probably get over it sooner than you think. People have a knack for sparking paranoid thoughts when all doesn't go as planned.