Scammer! please help. want item back!.

he scammed me on like 4 keys! how did he do? ye he did , THIS:
first he asked me if i want to buy mw2 - its call of duty. and he said he sell it for 4 keys and i was like oh okey its pretty cheap! but i payed in tf2 items so yeah i wanted the game and buyed it but i gaved the items before. he said he dont trust me so i gived first and he said he gonna get a mw2 key from hundle bundle so he gonna give after trade but he never did he just unfriend me. plzz help me!. full respect to all people who does report him and ill be really thank full.!

Add me and i will say more and say hes name plz help! so add me !
really thank full if u guys reported i will say name in chat and more plz help. I WANT MY TF2 ITEMS BACK!. PLZ HELP.