Most Helpful Guy
Love yourself. Be happy without him. That will make him more jealous than any hookup or guy you date ever could. You being just fine without him or any guy, will drive him the most nuts. It means that he was never that center of your existence. It was fun while it lasted. Glad it is over. He is showing his true colors by needing to flaunt a chick in your face to have any sense of his own value.
Goodbye and Good Riddance!
Most Helpful Girl
Get rid of him and keep him out of your house. Stop putting yourself through this torture. Go cold turkey on him and leave him alone. You need to heal. This is verbal and pyshchologically abuse he is putting you through. I have been there and you will never be happy unless you stop all contacting unless until you heal. And stop inviting him over.