[Noodles.]

I don't see how a b/f line in a 11.25 pot where the villain has kept showing aggression throughout the hand could ever be the correct line? He hasn't hit his straight, he wouldn't have capped the flop with a 6, so he probably has a set, overpair, two pair or top pair. Probably the set or two pair.

Anyway if you fold this river, what card would need to have come on the river to make you call his raise? If you would never have called it, just check or don't play that turn.