Wow! I don't understand the extent someone can go to for scamming others.
Anyways, never be too naive. Read the trust ratings of others. Use escrows like SFR10, Lutpin, OgNasty, SebastianJu etc.
https://bitcointalk.org/index.php?topic=855778.0 <-- Full List
Unless the user has 7 or more trust ratings, never trust in him and send money first!
I hope he returns something to you. Good Luck