Bad fold. What don't you beat here other than a set. Is he not reraising the flop with a set or 2 pair on a draw heavy board? If he really puts you on AK and he is a smart player he is c/r all in on the turn to ensure all the money is going in. It seems more likely he had a weaker Ace than you or maybe is trying to see a draw for cheap. I don't like your play. I'm pushing the turn.