Hey Franck, long time no chat!
Same happened to me. I lent him $200 in November last year. He said he needed it for just a couple of days.
In January he messaged me on ICQ to say that he totally forgot, and would pay it back straight away. Which he didn't.
I messaged him a few times after that, no reply.
Then I asked him on a board when he was planning to reply to my messages.
Yep, turned it around on me as well....said that we'd agreed that it wasn't a loan, that I was a scamming piece of shit, and to fuck off.