Well I got a text off a friend yesterday, telling me my ex has been writing on her status on FB that I have been sleeping with prossies after work...

To my amazement, she has wrote this, and then 6 people like it, and 6 people commented on it calling me names...

What is the best course of action?

The situation is this: I am no longer speaking to my ex, haven't done so in like 2 months.. I don't really want to confront her on it as I CBA with chatting to her with all the agro it will bring from her nut job benefits cheating family..

Obviously this makes me angry, as some people I know do have her as a friend and will read this. I guess the only fortunate thing is that she didn't use my name, just "my ex".