The first time I asked xh to leave, it was because he laid into dd (his stepdaughter) for not getting out of the bathroom quick enough.Of course, there had been a couple of things before that which I had reasoned away.
DD was in floods of tears that he was gone, and I didn't feel sure enough about what I was doing. He came back. It was okay-ish for a few months. And then it got worse. Every argument, it came back to DD. I spent too much time tidying her room, I was always defending her, she was spoilt, plus, he wound her up till she would snap, and say he was annoying her, so he would say, to her face, that she annoyed him. He commented on what I bought her (with my money), he sulked in I stood up for her. The final straw was him pushing her in an altercation and then trying to defend it that she provoked him. When I told him to leave the second time, this time very very sure there was no going back.
Did my girl cry this time? No. She started to come out her room, to laugh, to play downstairs, and she made just a couple of comments which told me that I had absolutely done the right thing. As I said in my previous post, he was not there all the time, so it was not that obvious at first, but it became obvious. And before I get flamed for not going sooner, dd had a close friendship with her stepsister, which she has pretty much lost. It was that knowledge, that she would lose her stepsister as a close friend, which gave me pause.
So, I kind of get the not wanting to upset dcs by telling him to go, but the result is damaging them. It is my biggest regret that I did not ask him to go sooner. Of course our relationship was in many ways also abusive but I am just unpickng that now. What he did to DD, bullying a child, was more obvious and if I had stayed I would have been complicit. So, I am not just saying LTB because I have an ax to grind, but because staying would have been the worst thing I could have done for dd. And she was there first, and comes first. I have dc2 with xh, and the differential treatment would have harmed him too. And who knows, when he is old enough to stand up and be himself, would he then be ok?