We agreed he would broker my unusuals but instead he traded them on scrap.tf and sold the keys via Paypal to Merendas. I've been friends with this user for a long time, he had expensive stuff, backpack trust and I fell for it.

After I gave my items for brokering he deleted me and set his profile to private, then I checked his backpack and he had traded the unusuals on scrap.tf:
http://backpack.tf/item/2958827733
http://backpack.tf/item/5439676999
I then added Merendas who had the dude added in steam and told him to tell the scammer that I would report him and he admitted it.
First 3 screenshots are our chat logs, my trade history, my chat with Merendas and his chat with the scammer.​

Hello there. I am Alice, I DID run with his items, and I DO take full responsibility. It was a mistake that cant be undone, so I take full responsibility. No reason for me to hide, backpack.tf admins have banned me anyway so Steam rep is of no use to me.
Sorry Cookie once again, was a silly thing to do, good luck trading.
To be honest I would have, and am still tempted to pay you back for my humanities sake.

Please be careful when trading with such people as you might fell in a trap too!