Omg no. This happend to me and when I told my bf, it did notttt end well. Now, her bf might be different from mine, but I'm just saying, it didn't end well for me. Butttt if she really really likes his friend and the feelings do not go away then yes she should maybe think about telling him. But if it's just a small crush that will fade soon, then no, it's better to keep quiet and avoid a fight.
why doesn't she just tell him now instead of waiting he's getting cheated anyway and if she doesnt tell him right away she is gonna end up breaking his heart in the end because she's with him with lies.
There are "school girl" crushes, crushes on co-workers, crushes on celebrities, crushes on your doctor, crushes on people you are around often. If it is just a crush then no but if the crush turns into anything more then it is up to the individual.
No! That's the worst! Unless he doesn't really care for her. She should just forget about the boyfriend's friend and either stick to her boyfriend or find someone else to like. She should think of how'd she feel if her boyfriend told her he likes you now and not her
If your friend and her boyfriend are close and in a serious relationship then maybe she should talk to him about it. If he truly loves her he will listen. But if she has completely lost feelings for him I'd say the best thing to do is just break up. Make sure you tell your friend to remember though dating an ex's best friend doesn't always end well and may not be the best decision.