*Pulls more tail then a special needs child at the petting zoo*
He gave you 10k -> left -> you duelled it with some other guy, -> lost it all -> now you can't pay it back even if you did have to.
Is that the situation? Anyhow, you need not pay it back assuming no one has screenshots of the 'Deal'.
He gave me 10k, left, I dueled 5k, got it back and still have 10k, now I'm wondering if I have to send back or not. I need the 10k badly but i didn't want to get banned for a false loan :^(