Is my bf trying to make me jealous or does he not like me anymore?

today, my bf said hi to me in the morning and rubbed my head till my hair got all messy...then leaves with his friend and totaly leaves there without saying where he was going or atleast trying to say bye to me... then during recess he said hi again THEN leaves me alone with my other friend to go and talk to my best friend which he flirted with before i saw him... what does it mean??? please help me!! i am confused!!....