My best friend or .. kind of gf, turned cold toward me those days why :(

[seventh cavalry]

We use to love each other, we would hug, kiss, say we love each other, but she kind of don't like me any more, what shall i at this point ? i believe many other people faced this ? any good advise ?

[searock]

How old are you? How long have you two been dating? Something must have happened for her to change her behavior towards you so suddenly. Did you have an argument, or a talk about making things more "serious"? You're going to have to give us more info.