Been with this girl for two years. Found out she was somewhere in the middle of the night three times by looking at her phone locations. She went absolutely crazy for two weeks when i confronted her about it. Don't know if she was cheating on me or what, but that doesn't matter. The point is that she is not healthy and good for me so i ended it. We had sex every night after this for a month, then got into a fight and i haven't spoken/spent any time with her since.

Here's the thing. We are both young/in school and don't make very much money. This apartment is a complete goldmine where i live. It's dirt cheap, in one of the best/safest areas of the city we live in, and it's right next to where i work. She thinks the apartment is "hers" because she got the reference for it and found it, even though it's a joint lease and we agreed it was mutually ours. So we both don't want to leave but i want her out of my life so i can move on.

So should i:

a) lose, and move to a cheap room in a house somewhere decent or move back to my parents temporarilly

b) continue living with her in hopes she will be the one to move out and in the meantime be completely limited in what i can do in my own place (can't have girls over, no hanging out in the living room, awkward encounters with her everyday)

c)???

I have no idea what to do. Part of me thinks this is good right now, since i'm not trying to date right now and instead really work on myself. But how can i move on and be happy when my ex girlfriend lives in the room next door? And if she really is a crazy manipulative person who cheated on me what else is she capable of doing?