I also wonder if you are telling yourself that you must stay with this man no matter how badly he treats you for the sake of his kids. But it’s simply not the case. Ton on people co parent just fine and raise wonderful healthy children and they don’t put up with nonsense. Being a good parent or a stepparent or any other involved adult doesn’t equate to being mistreated by partners. I don’t know why you feel you must allow this abuse to continue