Brutal 30-60 hand on PP

I am UTG with JJ and I open with a raise. AcKc makes it three bets to go, and it folds around to me and i just call. Flop comes rainbow J 8 6. I check, and villain bets. Turn comes a 10. I check, villain bets, and i raise, and villain three bets, and i cap. River comes what then seemed to be a semi- harmless Q, for a board of J 8 6 10 Q, no possible flush. I bet, and villain just calls. Is it possible that he didn't realize he just made the nuts, and was calling me with A K high? when he three bet the turn, i figured him for AA, and could not put him on anything else. Any comments on my play and why he only raised when he was behind and just called when he had the nuts?