I am in a relation with my girlfriend she says she love me and I love her to in between she dissappeared did not reply me and she's back now she is behaving like I am crazy for her she irritates me now I want to talk to her on call she says she is busy . I say I want to talk she says she is studying she is behaving weird why?

She can have a lot on her mind or maybe she really is busy. Give her the space she is trying to hint to you and wait till she gets in contact with you. Chances are she will question why she hasn't heard from you. Let her miss u.

Leave her alone until she gets curious as to what you want to talk about, but I also suspect you smother her, and demand a lot of time, Do you?

Not a lot of info friend, more would be great.

Yeah it is.. she really most likely is doing it for attiontion. Don't tell her you want to talk, just call her ! Or go to her in person . Tell her how much you love her.