What should you do if your boyfriend's ex is extremely mean to you?

I have no idea why you or your boyfriend have anything to do with his ex at all. Right off the bat ..... it's your boyfriend who should be resolving this problem. If this girl is coming after you and you've done nothing to deserve it then if he was any kind of a man it should be him that puts her in her place and not you. Sounds to me as if this guy is playing two women against each other. Tell your boyfriend exactly how you feel and if it isn't resolved soon he can hit the bricks! If he's playing a game with both of you then you'll soon find out if you say this, and if he hasn't got a spine, then you don't want to end up with a man like this for the rest of your life. If you are in the same group of friends, then it's time for a change. Let your boyfriend know right off the top you aren't putting up with his ex. The ball is in his court! Good luck Marcy