Oh my god dude this is really sad I could feel myself welling up

The answers of course were never going to be easy my friend.
It sounds like she would rather have stability with her current BF than to follow her heart and perhaps "take a risk" leaving him and getting with a new guy? Maybe she is stable and "happy" in her current life situation with this guy and there might be some sort of social consequences of getting with you?
I really dont know my friend as I am merely an outsider looking in on a situation you can only explain in a depressed state in a mere few paragraphs... The advantage is I can see it more clearly because I am not in love with this girl... I really feel for you my friend I have suffered heartbreak many many times and it always gets harder.
Here is one principle or "law" of human behaviour that might explain why she is ignoring you. People move towards things and situations that will give us PLEASURE and move away from things that will cause PAIN. Pleasure and pain govern everything we do, govern every decision. This may sound like a vast oversimplification but I assure you it is correct. Procrastination for example, it causes more short term PAIN to get off thy arse and do something than the long term PLEASURE we get from doing the task...
I do not say this to upset you but here's my theory: To leave this guy and get with you it would cause an upset in her balance of life in such a way, that there is more PAIN assosiated with the risk of meeting up with you again. However if she stays where she is there is more pleasure she can gain from doing absolutely nothing and keeping her life the way it was before you. I dont know what this other guy can offer her, money, stability, a family she is close to on his side? Or a family of their own planned together? Her meeting you and both of you falling for eachother was clearly unplanned, but for whatever reason she feels safer and more stable where she is right now, rather than taking action and taking a risk on you..

Im really sorry my friend my heart truly goes out to you..
I had a chick leave me once to get with some guy who was a *BORE*, he offered more survival value however as I had no family or stability, my family were hundreds of miles away and I never saw them (I live with them now) and I was on the verge of being made homeless... She left because in the end he had a loving family who took her in and supported her, and he kept her "balanced".. What a fool of her to think this guy would fix her messed up head, only she can do that!
So she left me, a guy who excited her, challenged her, gave her the best sex of her life and more adventure than anyone else she knew... She left me for stability and a "head fix"... I dont know if women are cruel or if this is simply a part of their inner instinct to survive... That is the question
What you need to do my friend, is get motivated, and go and meet as many other women as you possibly can, even if this girl isnt on the cards in a few months time, you will have options, and if she IS on the cards, you have preselection. Its no good you sitting around all depressed, you must go and distract yourself completely, so call up some dudes, and get out the house
Hope it works out for you