[smittyuiop]

So you're putting him on AQ or AJ, or maybe AK? Preflop his huge reraise would seem to suggest 88-QQ, AK, and depending on the player maybe AQ/AJ, KK, AA, other stuff. His flop bet is pretty big and commits himself to the hand, so I doubt he has AQ unless it's hearts, maybe AJ cuz of the gutshot. Also it's not a donk bet since he had the initiative preflop. I'd expect to see JJ, QQ, 88, or any hand that paired the board or even AKh freerolling you a lot more than AQ, AJ, or....well I can't think of anything else you beat.

Edit: Didn't see button called so I guess he could be on a squeeze play that he's very dedicated to. Still think it's hard to play the hand this way without a very good read.