Possessive Much ?

( EDITING!) He pushed me against the gym lockers and man did he look different. Not scary but...... Possessive " WHO IS HE !!" he shouted I was confused , who was who then I remembered and started laughing . " Oh you mean my older brother , yeah people say we are pretty cute ." My voice clearly with sarcasm He looked at me for a few more seconds and then stormed off . Who knew he can be Possessive?