boy friend has drove me officialy off the cliff

i have no idea what the fuck his problem is. hes been like this sour ass attitude since yesterday afternoon.
i mean we've been together for 5 fucking months and been close before that. why wont he tell me?
i know he doesnt like talking about hisself but he does tell me at least. this morning he wouldnt evem let me kiss him. i dont know. but its driving me insane.
peace
dead_punk