Seeing your best friends get hurt is the worst thing ever, especially being hurt by a guy. What sucks is you know you can't do anything to stop it. Of course you can talk to her and everything but that really doesn't help the situation. All I can do is build up her confidence and just be there for her, listen to her and just understand her. So when this happens again, it will because some guys are dumb, her confidence won't falter.