So my mom is someone who has cheated on my dad the entire time they we're married. They got a divorce and both remarried. My dad has been happily married for a long time now but my mom on the other hand has remarried twice now. My mom and my recent step dad are having problems and he isn't here now. My mom is bringing a guy over who she says she is dating, While she is trying to work out her marriage. Neither of the men know about each other. I don't want my little brother struggling with another male figure in the house. What should I do?