The guy's a maniac, we've established that.

His range IMO here is AA,KK,QQ,QJ,K10,and 99, and a very very small part of the time >5% he's bluffing completely.

I think it's highly possible he has an overpair here and his river action signifies that he thinks you got counterfeited.....ugh.....i hate even thinking what it's like to think like that given the action....

anyways, cap the river. if his range is what i said above, you're behind rarely here..... cap that [censored]