My mom and dad have been separated for about a year now. For a while now, my mom has been going out and says that she is going to church or going to hang out with some of her girlfriends. Well I found out that she isn't doing this and actually going out to see another man. Now she knows that I know because I have pretty much given her the cold shoulder for the past couple of days, and she has confronted me about it. My dad doesn't know about this and I am very hurt and I don't know what to do. It would be more understandable if they were divorced and not just separated, and if she didn't lie about it every night, which she still does to my little brothers. She is sad because I will no longer talk to her, but I am still angry with her. What would you do?