Thanks for the comment the more they see each other the sooner the death of relationship. I can't get out of my head that he is going to shove me aside and put her in my place. I can tell he thinks he is in love with her. You are right ad him not being acknowledged as a child. He was the victim of some gery abusive step parents. In fact he is using ow to get over these as she had sane thing.
Did you ever enact 180? Is it truly opposite of whatever you normally do? Boundaries are hard, as he just blows over me and does what he wants. Probably because we are in same house. Suggestions on boundaries?