There are other issues with this, but this is the currently bothering me. He treats my SD differently than our boys. One is not his, one is. He says he loves my DS like his own because he has raised him practically his whole life. Anyways, he lets SD get away with things that the boys would get in trouble for. I'll bring to his attention and he will either say she didn't do anything or calmly tell her to stop or don't do that. And he will love on her and stuff and snap at the boys when they want his attention. It's messed up. I have tried talking and even arguing about it and he says he is doing nothing wrong. He says he is not fighting over something so stupid. This morning he told me to go the fuck downstairs when I brought it up. What should I do?