Yeah this isn't cheating by any sense. Sorry if anyone disagrees. First, she was drunk, and tried to push him off anyway. Eventually she did, even after one or two kisses based on your story. So what? She was drunk, and yet still managed to get him off 'cause she was thinking of you. A kiss means nothing, especially when under the influence. She I'd say you're safe in this boat,
Secondly, I don't think she cheated on her previous boyfriend either. Sorry, but it was only going 1 month and all she did was kiss you. (again, based on your story, unless you're leaving something out

). She then proceeds to break up wuth her old boyfriend, who (if you go by my standards) isn't really a boyfriend, as opposed to some guy she's dating. In college people are going to keep their eyes open (especially ladies) 'cause that's the prime time to look for a spouse. I believe the conception is that it get harder to gets dates, go out, find a relationship after college. So, in her eyes, you were the better choice, and since she had only been with that guy for 1 month, he wasn't hard to toss aside.
as ar as high school goes, everyone is stupid, guys and girls. I'd say the average length of a relationship in my high school was about 1 month, at the absolute maximum. (I on the other hand went for 2.5 years, regrettably)
Cheating doesn't necessarily have to involve sex. But in my experience and observations, it most often does.
I don't think you have something to worry about. Be happy
