answer:You have a significant other, is he aware of this situation? If not, tell him. I don’t want to be rude to this guy, but I don’t want to be with him, and I sure as heck do not want him hanging around my home. Pick two. You cant have them all. Also, considering how things are going, you should reconsider wanting to have any sort of contact with that kind of person. Manipulative mentally cruel people are extremely dangerous, especially because they know how to engender guilt and debt towards them. Beware of any attempt at reconciliation he may try, it’s there only to paint you as the bad guy if you refuse it. Seriously, my suggestion is just to burn all the bridges, let your SO handle it and leave him out of your life.