What if your mom wont fuck off?

Ok so I have this guy friend that is a maintanence man and he asked me out *as he was divorcing his wife, still married though* and i said NO. I didnt want to get into that shit. But this guy is my mom's friend so he hangs out around the house alot. He was "pretending" to be depressed about me turning him down and my mom was like : "awwwww why dont you go out with him?" I kept telling her no and then as soon as that guy was divorced he found the first girl he could find on the internet and drove three states away to get her! They didnt even know each other for long! Now he constantly comes to our house and brings her! I tried talking to them both b/c the guy was still my friend, but now my mom yells at me for talking with him and laughing at his jokes *b/c he is seriously funny* She calls me a whore and all kinds of things.....


What do i do?!