Parents would be a good place to start.. 3 years is a while.. not sure how much D law changes.
Did you guys sign the lease together? You may have an argument there.. again.. need to consult the L.
I can't tell you to not think about getting back together with her.. I will say this though.. that seems to be a big driver for you. I understand.. I'm in the same boat. Try detaching a little more.. friends is a good place to start. That would be my goal.. get through this spot and try to become friends.
