Help with my crazy relationship?!?

Helpppppp....:( i have an ex girlfriend that ive also been friends with for almost 2 years but she broke up with me about a month ago. We dated for about 4 months and the reason she broke up with me was cause she said she wasn't falling in love with me. This hurt soooo much, but since then we still hang out every day and still do everything we did when we were together but we aren't offically together. But as of last night she told me that she misses her ex before me and might still have feelings for him. This is the worst thing ive heard in a long time from her and idk what to do. I truely do love her and will do anything for her. I just want to be with her and she dosnt feel the same way. I know theres a chance of us getting back together and that keeps me there for her all the time, but i also know theres a chance that i will have my heart broken again and again but to me it is worth the risk even thought she dosnt think so. I am so confused and all i can do lately is sit around and mope when im not with her thinkin about her with someone else kills me. So bascially im just asking for some advise, help, suggestions, what you would do anything to help me out cause im really upset and need some advise please help me :(