dont ever question urself or the decisions u made. u loved her for who she was, and she obviously couldnt do the same for u. sounds to me, and this is just wat im getting from reading this thread, like she had it pretty good and possibly got a little spoiled. if ur being true that u did all u could to help the relationship, then my thoughts is she started taking advantage of the fact that she could push u around. and honestly, if she was creating that distance b/w u two (the phone calls, movies) then she was trying to either create an exit for herself, or is on another agenda.
watever it is...all u can do from here on out is keep living ur life the way u want. make urself happy. it's ur turn now.
i dont doubt u hurt from the whole experience, but honestly, u'll only grow stronger from the situation. and dont EVER question wat u did...if it was ur fault...cuz it wasnt and isnt. u are u, and u'll find someone who appreciates that!
good luck!