Ok so i just need to vent a little having a conversation with my mother in law about her two sons one got cheated on and the other is cheating on his wife he has been in USA for over 10 yrs and since I’ve been with my husband the brother that’s cheating on wife has been saying for the past 4 yrs that he is leaving and never leaves now this past month he told us he has a relationship with a women here but no kids and when I mentioned that to my in law she said she would talk to him because but never has had that conversation with him now I think that my mother in law should have either talked to her son or already tell her daughter in law the truth why cover up for her son because that’s what she is practically doing right? Now she got really pissed when she found out that they cheated on her son but doesn’t get mad for what her other son is doing to his wife in Mexico like wtf now Ima be leaving to Mexico soon and would really like to tell her the truth but my husband says not to that the one who needs to say something is his brother but I don’t think he will ever do it what do you guys think I should do ?????