Anyone, ANYONE (including Saints, Samaritans, Buddhas, etc etc etc) who says "send me a Rolex now and I'll send you a knife later" needs to be cut off immediately and never spoken to again about anything.
Of course you didn't get your knife, and now have a two year old problem. He is never sending you that knife, and you already know that. And yes, he will play the victim card and act like you're HIS problem.
A similar thing happened to me in fourth grade when I lent $5 to another kid. It sucks that you had to learn the lesson by losing... well, more than $5.