It's definetly possible she still wants to get with you but maybe there is too much history between you two and she thinks it better to just be friends. She could be worried about being hurt for some reason and if that's the case she may never be able to give her heart to you fully ever again. It's just something you have to accept if that is the case.
You're always going to have feelings for her and the best thing to do is find someone else or break off all contact intil you are dating someone else so you wont have the thoughts of getting with her all the time (but since you are living together, it makes the situation extremely difficult). Time heals all (so they tell me).
One day the Moon said to me, "If he makes you cry, why dont you leave him?" I looked up at the Moon and said, "Moon would you ever leave your sky?"