How do I get this crazy girl to stop talking to my boyfriend about me?

[Carrie45]

I am almost 8 months pregnant, and am emotional and can't stand this girl who thinks she has to talk to my boyfriend about ME! He is a nice guy and won't just be mean and tell her to stop. She talks about me to him like she knows me. This girl and I have NEVER been friends, she got 50 dollars stolen from her by a guy that I know so she thinks I owe her 50 dollars...Ya that kinda crazy. She told him about that tonight, and he also told me she was saying how i blocked her on facebook but it was after she asked me of o liked my car, and said it wouldn't look that way for long. I did tell her that she was dumb for saying that on a chat i did print it off and save it so I would have it just in case. She just wreaks havoc where ever she goes to the point 2 people have restraining orders... I don't know what to do.