Good for you and your friend (not even being sarcastic here). If that's how you want to do it and it works for you, then more power to you.
For me, well, I ditch a class or two, but not often, and certainly not for a woman. Call me a nerd, maybe I am, but I have a clear list of priorities and principes, and women are far below my college and job prospects on that list. Maybe the OP's woman is like me in that regard. I doubt it, but all I'm saying is, women with a mindset similar to mine exist and if you want to be with those women, you gotta respect her priorities. If you don't, then simply next her and move on to another plate, simple, it doesn't have to be a big deal.