You can move on, but you choose not too. Do things that keep you and your mind busy. Eventually you'll just forget and move on. It takes time, some times it take a lot of time.
Truly is the most awful feeling in the world. Rejection and loneliness are the hardest, especially when you still love someone. I'm so sorry for your pain, but it's important to find friends to help you through. Don't shut everyone out, that will only intensify your feelings of sorrow. (((HUGS)))
Try changing your routine.
Try a new hobby, that requires a lot of concentration.
Been there, I know how it hurts.
I'm sorry you're going through this.
wear an elastic band on your wrist. every thought of her will be a snap of the elastic band on yourself. let this stop you from thinking about her.