how can one tell??

i've got a friend that thinks that her friend (that normally she hangs around with in school) doesn't like her...she said that she could tell by the way she reacted to her or something and the way she said things about her sometimes...for example she said that her friend "joked" that she (my friend) liked to attract attention..and the way that her friend said was kinda a little disturbing..

so....recently i've been wondering about this..can a person really tell if another person, that is quite close to him/her, dislike him/her?? i mean in a crude way, can you really tell whether your friend dislike you or not and HOW?? i've just been left thinking...wondering...