I guess if she isn't leaving your partner alone, you should do something about it, right? I think you should start off by being patient with her, and if that doesn't work, don't lose your temper, and instead, just ...do what you think is right, which is to NOT retaliate and ignore her. I mean, what can you do about it? You're the one with the guy, he chose you over her. She should get over it, no matter how hard it is for her.

Well, what does your boyfriend think about the situation? Does he have any idea on helping you out on this?