Just move on and find a boyfriend that is worth your time.
you can ask him or, just watch how he is around other girls and how he is with you and compare the two
Boys like messing with girls heads because they think it impresses girls and it shows other guys to back off.
Well it depends what sense you mean. If you mean worry about him messing around with other girls then no that's not really OK and you should talk to him about it. If you mean worry for his health and happiness then yes that's OK. Its a sign that you truly love and care about him.
Ask around, or confront him
well you say that he hangs around with the other girls because of he goes out with them and is cheating on her and she will sometimes believe you and sometimes not
you get a new boyfriend
Who gives a cheese what other girls think of your boyfriend the other girls are just idiots if there's noting wrong with him but if there telling you stuff that can't be ignored then INVESTIGATE
he will try and flirt with you and might also make you jealous by flirting with other girls when your around.
YOU BREAKUP WITH HIM! a boyfriend worth your time, and that is all yours wouldn't talk to other girls on the internet!
i believe that you should stop having them around each other because this situation means that they may be messing around with each other... There should be no reason why you boyfriend should be more interested in your friend than he is with you. If he can't stop hanging around your friend, then break up with him
well if he is just messing with you then he most likey likes you but if he messes with a whole bunch of other girls than he is either trying to be funny or a jerk
hmm, what do you mean over and over other girls ?