I feel bad for you. Seriously. You sound like the kind of guy who deserves her - I really mean that. But don't get all defensive and angry on us... most of us went through that shit in a way or another, actually. And yes, there are patterns. Of course with exceptions, but guys that lay their lives for the girl they love well... looks like they don't often get what they deserve.

And yeah. You can't move on, tried other girls but things went wrong because you still think about her... so the only advice we can give you is like >>18 said: comfront her, tell her where you stand. Not just "oh I love you I would do anything for you blah blah blah" - tell her that your life is a mess because you've been there for her and she knew she'd never give you more than she gave you.

Maybe you'll realize that you need to get away from her. It's less than probable that anything will happen now; and even if there's still a chance, you risk becoming more damaged emotionally that you already are. Plus, she has someone to rely on, now... so she doesn't really need you anymore.

Sorry, mate.