[Trix]

Just 3bet preflop, it is too be expected in a blindwar.

I´d bet the flop having just called as it´s pertty wierd for him to check, so he prolly has some kind of hand.

Flatcalling the turnraise is probably ok, you dont want him to fold if you 3bet and you can missrepresent your hand even more on alot of rivers.

Edit: Thought he had AA