If you're cheating on your girlfriend, you're obviously not close enough that you would turn down the opportunity. I say leave your girlfriend because it seems to me you're not ready to commit to her. If you were, you would not have taken it any further than that party. You WOULDN'T have arranged to meet for the campus fair. You WOULDN'T have arranged for a movie in your room and WOULDN'T have kissed her. You could have at ANY of these times told her you have a girlfriend and/or just stopped seeing her.

t's seems to me you're not dedicated enough to that relationship that's 1.5 hours away. So it looks to me like you need to breakup with her. Then you can feel free to be with this girl, or any other for that matter without a guilty conscience.

Rod Steele