How would you deal with this?

K so this is a pretty long story sorry

to make it simple i LUV this guy and we used to be best friends and we used to have all periods together

but then we changed grades and all of our classes got changed now we only have two classes together and i really miss him AND the girls in his class are all over him and it drives me crazy because i can see them flirt with him during PE.

and he doesnt talk to me anymore hes always sad and i aked him what was wrong and he said that he doesnt like sharing his personal stuff with other people and im like what (in my head) we used to share EVERYTHING and now he acts like if im some kind of stranger what should i do.How would you deal with this?
spending time apart has changed his intentions of you. you should remind him how you two use to share together.



ask him for lunch sometime during school and then you two should talk.How would you deal with this?
try kissing him.
a lot of times when you go to a new school (high school or junior high) people change. just let it go, or try to, because it looks like he changed.. in a negative way. it happens.
i would tell him straight up what i felt because you'll regret it later on i know i do you'll always wonder what could of been... and tell him that you really care about him and that it worries you that he seams so sad all the time.......tell him because you will regret it trust me i still regret not telling my best friend what i felt about him and we ended not talking