The guy I'm seeing is still in love with a girl he used to sleep with. Normally I wouldn't be so upset about it, but I've moved in with him and he keeps saying that when she's out of jail, she's going to move in. And he has kids and I'm raising them amd takimg care of them as of they are my own but I still feel as of he would prefer her even though I've heard not so good things about her. How do I prove to him that I am more than she will ever be?