God, you're still chaffing over the fact that she apparently rejected you because she got together with your mate instead, TWO YEARS AGO.

Are you actually this entitled? She's really into you and all you can think about now is that she should have chose you two years ago instead of your mate? What? You skim right over that part. Did you even want her? Speak to her? Make eye contact? Clearly your mate did what you couldn't. Why aren't you pissed off with him instead?

You know what? I think you're right, you shouldn't carry on with her. You aren't mature enough for a relationship yet. Find someone more on your surface level and let her find someone without ludicrous hang ups that mean absolutely nothing whatsoever.