You write him, "by Tristan D'Agosta on Wed, Feb 19 at 11:22 AM ... You asked for an address to send the BTC to before, this is the address: 1My4UPJ1tGDEGxck3W94BSZwTcEAE7Pfj8"


Looks like he sent you 50 back ??
On the 22nd ??  https://blockchain.info/address/1My4UPJ1tGDEGxck3W94BSZwTcEAE7Pfj8