why why why?

1month... he didn't go out for lunch with me 1monthh already... he promised me tht he will go out for lunch wif me this week but he didn't keep his promise... so today i went for lunch wif yee ai they all (couple) and go back to school alone... it was so bored while i walk back to school... i hate the feeling much... but i hav no idea, who call tht he dun want to take lunch with me?! in ajimah, everyone was asking me the same question, it's really hurt! i never think tht he will do all this to me... after the australia trip, he had changed a lot... less messages, less comunicate and less concern... he always ask me whether want him to teman me go anywhere or not and he will say at least 1 "love u" to me a day. but now, he stop to call me dear and he will not send me any message when he reached home... and he will not teman me and wait for my mom's car... he keep asking wad happen to me but i was really really dunno how to answer him this question and it is so hurt to me... how could he treat me like this? y he cant treat me like how andrew treat yee ai or how he treat me at the beginning??? =(