I have 2 daughters, my husband has a son. We have all the kids on the same weekend. They don't fight, but they don't interact either. When they do, the son is bossy and likes things to go his way, my daughters get frustrated and just go to their rooms. It's been going on for a year now, but it's to the point where my daughters don't want to be there on the weekends because he is there. My husband says they are being unreasonable and not giving the son a chance. He also says, his son is the way he is and nothing can change that.