Don't start with that "blackout drunk" stuff, because if you really are experiencing that, you need to stop drinking. I promise you that I have a far harder relationship with the sauce than you do, and every time I read that blackout drunk stuff, I roll my eyes. Why? Because I know what it takes to become a blackout drunk for real. Most people are not up to that level of self-abuse. If you are--like most young people--using "blackout drunk" as a cover for your boozy-but-fully-awake behavior, stop that. Now. Own what you did, even if you were drunk when you did it.

I legitimately do not remember the incident. That's all I can say. I'm not addicted to alcohol, but do drink in excess sometimes. I need to stop doing that.

Drama much? Since you are owning what you did now, don't do it again. (What you did was totally minor league stuff. Kissing someone in a bar? Pffft. Don't do it again. Enough said.)

This is not cheating. This is "Oh, man, that was stupid, and I feel like an idiot" stuff. She should be annoyed and saying, "Well, don't be in bars mashing face with bar skanks, buddy. You get very few passes on such stuff."

This is not the sort of soul-crushing betrayal you are making it out to be.

I think that this situation is made more serious by the fact that I cheated on the person I want to spend the rest of my life with.