She obviously wants space- give it to her. In fact, stop contacting her WHATSOEVER. She'll eventually CONTACT you out of curiosity why you're busy and a sense of loss that she doesn't have someone to fall back to. Go out, find new hobbies, make new friends, and have LOTS OF FUN. Go make life enjoyable again. Remember how you were before you two dated? Good. I'm not telling you to forget her, but to tell you that you should make yourself happy at all times so she may be attracted to you. Another thing, STOP TELLING HER THAT YOU LOVE HER. Obviously, it doesn't work so just STOP. Stop crying/begging because all it does is PRESSURE her to death and of course, she'll think of you as a sad loser, which you aren't! She's obviously will be at a lost when you start loving yourself once again!
Everything you've been doing now doesn't work, obviously. So NOW, it's time for you to do everything opposite you don't want to do. Which is to stop loving her for the time being. Continue dating. Accept friendship with her, tell her you understand she broke up with you, always agree with her, and keep consversations MINIMUM but enjoyable. Make yourself look like you're in control so, always be the one to end it and only make it so that she contacts you. Oh yes, and show her why she'd love you.