step kids

so my husband and I have been married since September 2017. I have 2 kids from a previous relationship and so does he. my kids have lived with us the whole time. a little over a month ago his children decided that they want to live with us. before he and I got married they ruled this house and got all of his attention. well now that they have been here awhile, they are starting to realize that it isnt the same. we are still going through the court system for custody and we have 1 more final hearing before it is set in stone. I feel like his kids don't like me and they don't like my kids. they're always so mean to my son. I am hurting so badly because I love my husband but I don't want to be the reason he doesn't get to have his kids live with him. and anytime I try to talk to my husband he just gets mad, and I can figure out if he is mad at me or upset with them. any suggestions would be appreciated. but mostly I just wanted to get it off my chest. I just don't have anyone I can talk to right now