I have a two year old son who's father has never been in his life. For a long time I had hoped we would work things out and be a family one day but eventually I realized that would never happen. I got accustomed to doing everything on my own as a single parent with no male role model for my son. I have recently started a new relationship with the man I hope to be with forever. My son really liked him at first but eventually started feeling jealous I guess. Every time I am with my boyfriend my son throws screaming tantrums. He does this when he is not around too but no where near as extreme. My boyfriend is a father of a little girl near the same age as my son and he has different methods of discipline than I do. We argue about my son's behavior constantly. I refuse to let him discipline my son but I know my son's behavior is out of control. He is lacking a male role model and my boyfriend wants to be that to him. Does anyone have advice on how to cope with this situation?