my friend thinks her boyfriend like someone else, but they always spend qualities times together and my friend just don't want lose him again. she wont stop thinking of her boyfriend like someone else i told her stop thinking..but she cant i told her to talk to him about him but she said soon i don't what else to give her.

that's bout all you can do, but you can try talking to her bf for her just to make things clearer

You could talk to her boyfriend.. but better yet.. SHE should talk to her boyfriend.

no. you should not talk to her boyfriend. definitely not. this will stir up a lot of drama.. if your girl is already jealous and you are talking to her boyfriend about her.. this will cause more unwanted jealousy of yourself. you need to get her to talk to him. and if he does like someone else, he needs to stop leading her on. and if he doesn't, than she needs to know from himself, not you or anyone else.