I have found out my daughter is dating her ex boyfriends best friend, her ex is still upset over the breakup and this would destroy him. I am really upset myself and have not yet spoken to her about it. Is it unreasonable to ask her not to bring him home. I really don't want anything to do with him and I'm really disappointed in her, as is my husband. Would really appreciate some advice as we are going away next weekend and I can't face the thought of her bringing him in to our home.