Good advice here, Heather.
I'm sorry for what brings you here.
I'm sure it seems like he picked her over you, he may even be saying it that way. But that's not it. He's so addicted he can't see past alcohol. Alcohol is running the show, and alcohol wants him to be in an environment where he can drink without feeling bad about it.
I hope you can find some face to face support like alanon and counseling. keep posting. You deserve to have people around you who are good to you and your babies.