How good of a friend is she to pull that crap? I've had friends try that, like back in high school and it gets old real quick! If she were any kind of friend, she would have talked to you first and expressed her issues with this guy, instead of just doing that.

Second, it doesn't matter if you are a "weakling" or not...friends can stand up to each other and tell them to knock it off without having to get physical.

Sounds like a lot more is going on here...