In the past it has worried me and I have struggled with the thought of why I have not gotten angry about my sitch and beaten the crap out of him. A natural reaction would be to do this I would have thought. Maybe I thought I was a doormat for not doing anything. However, I feel very good now as I believe it takes a stronger man to keep his head when needed and not to fight when it would achieve nothing positive (although it may make us feel better).
My friends also have said they can not believe I have not taken a baseball bat to him and that they would have done so if they were in my position.
Maybe she did it for a reaction, maybe her mind now believes that this is acceptable behavior. Like they say, alien to what they once were.
They made fools of themselves and the others at the party were appalled with them NOT you.
Keep clear of the wreck and you will survive. That is what I am trying to do with my sitch anyway.