Anyway, there's a possibility that nobody seems to have mentioned yet: he may think you were laying down. If he does, then he knows the old number 1 way to beat a hustler: let him lose to you at first, as hustlers do, and then quit, and enjoy your new spending cash.
QFT. Want to win in 3 card monty? Win that initial $10 bet and then quit. If you move on to the subsequent $100 bet you are likely to be down $90 once it is done.
Anyhow, Noone knows the whole story. Perhaps he did not like playing you. Both John Schmidt and Chris Bartram are well respected gamblers and both of them have made public statements on how they will not play certain players for cash ever again regardless of the outcome of the last match because they do not like playing those players for reasons having nothing to do with the money or how good they shoot.