Hmm.... something is not right, that's for sure. You said she's the love of your life, and you wanted to eternally be with her, but you acted out on hurt emotions and cheated. She then hits you. Hitting is never OK, I agree with you. And yes, you both crossed the line. Why was she going through your phone anyways? There's mistrust on her end. This just doesn't sound healthy all around. I would steer clear of her because of the hitting & because there's too many issues.