I have a friend who is always argueing with people, just about everyone she comes across actually.
Last year she told me that a mutual friend had been talking behind my back, when I confronted him he was shocked and claimed he didn't know what I was talking about.
Now her ex partner is seeing a friend of mine and the stuff she has said they are saying about me is really bad, but again they claim its untrue.
If you were in this situation, what would you do?