<human>: Can you give me the gist of the text in a nutshell?

Basically we're going to different colleges, and she went to her roomate's birthday party with a few friends of hers. She usually doesn't drink, but she got really drunk. Her male friend (they have been friends since before we started dating), who was also really drunk, started touching her and they started dancing and were being pretty grabby. They slept on the same couch, they weren't snuggling or anything but they were pretty close to one another, but he left after a while. She told me all about this the day after, as soon as she was alone and away from any friends or roomates. She said they didn't kiss or do anything more intimate than what was described, and I believe her; if she was gonna lie, why would she even mention anything?

So she obviously betrayed me, I don't know if it qualifies as cheating or not but it definitely was a blow to the relationship. That being said, she is extremely regretful. We facetimed all day yesterday, and it was the first time I have ever seen her cry as hard as she did. I was obviously mad at her, but I forgave her. I'm more mad at the guy, obviously; if he wasn't grabby none of this would've happened. 

She was drunk, so obviously she wasn't thinking straight, but is that really enough of a defense on her part? It's hard for me to think about it, so I just wanted to ask what you guys think. I love her to death, and she obviously loves me as well. She's been there for me through pretty tough times, so this is all pretty hard on me.
<bot>: Girlfriend in another college got drunk at a party, her male friend who was also drunk started being touchy and they were both dancing pretty intimately