Blocks me but then is nice. Shouldn't he have talked to me alone?

he sounds like he's the kind of guy who knows he's cute..like the arrogant kind...just dont worry about him i think if u ignore him one day he'll come around and see what he missed out on...those kind of guys scream for attention from girls and when they get it..they stop playing the game...dont pay him any mind. and the fact that he blocked u..idk thats a bit off guard maybe he was hiding being friends from u or maybe something was bothering him about u...idk but the only way to find out is to ask him about it i guess..but since u all just graduated forget it..u'll find much better guys in the future who dont play games! keep your head held high!!