sad~~

Can someone tell me how to forget and let go of a girl which u are still loving now??? I feel sad because Im forced to let go and forget about her. Why being forced??? Because she keep on forcing me and pushing me to an end of it. I have no choice and just tell her I will let go. But I know it's impossible to let go a girl which u have put all ur heart into it and somemore I know I did no wrong in it. I can accept the 'normal' friend status which she given to me. But why she still needs to treat me so differently among normal friends. I meant differently bad, extraordinary bad attitude towards me. I feel sad and it affects my career as well. I really cant take it anymore. The way she talk to me really different. When I go through her pictures on FB, her look is so happy and feel nothing about what she told me before. I feel being cheated by her but i dare not to feel like this. Is it possible we can go back to be normal friend again??? Im confused. Maybe it's the time we both not contact each other anymore..but i not dare to do it...because i love her deeply...