Offer your thoughts or opinion on the input financial query or topic using your financial background.

Unmarried Couple Splitting up with Joint Ownership of Home 
Despite the unmarried status, you need to see a lawyer.  Essentially you have a business with this person owning a home as the asset, and a mortgage for which you are responsible for.  A lawyer needs to examine any paperwork you have and with knowledge of your particular jurisdiction's laws can advise you on the proper course of action. You paint a really ugly picture of this guy.  I bet you are correct that he is kind of a horrible person.  "Tough love" time:  You willingly entered into a long term contract with this person.  Why would you do such a thing?  Perhaps some self reflection and counseling is in order.  This is probably more important than worrying about your credit. All that being said, it is good of you to want to break ties with this person.  You can rebuild.  All will be good if you concentrate on the right things.