My friend flirts with my boyfriend... What to do?

I know a girl who's like that. It's natural for you to feel annoyed or hurt. Tell her how you feel and ask her to stop, it's not right for her to act like this, especially when she knows he's with you. You should also talk to your boyfriend and make sure he knows how this all makes you feel. It sounds like he isn't interested in her anymore so he should agree with you. Sorry you have to deal with all that! Good luck!