My dear, I was in this state before. Though mine is a little bit different but it almost let to breaking up but God intervened. so I possibly know how you are feeling right now No matter what any one says will not make sense to you. The only person that can heal you is God and yourself. You know we guys sometimes are mumu wen it comes to loving our girlfriends but girls are very inteligent and sensitive in a relationship and they are always after what they stand to gain. I must tell you, you are better than her. Most times we are the problem of our chalenges. You are what you think you are. peharps you once envisage she will one day leave you and you over protected the relationship so she took you as a weak guy and left for whom she thought is more man enough. Apology to girls. But girls are children with long hair you treat them with knowledge.

The little tips I can give you is to begin to see yourself better than the girl and beleive you will certainly get a better girl with better qualities and attitude who will love the real you in you.

Though there might be somethings she might not have that your formal girl will have but her qualities will certainly be better off. Dont kill yourself and dont because of her go extra miles to do things that are not right. (smoking or drinking) it does not worth it

Again, there is one thing I must tell you, as long you never treated her bad and you love her truely, God will give you you true helper.  she will certainly get her reward. thats always the nature of life.  But above all always remeber to pray for her