Live 25/50 Hand at borg

[PoppinFresh]

Never played with villain before, nly hand we have played together, he makes it 225, I reraise to 800 with AK, he calls. Flop AQx rainbow, check check. Turn blanks, he bets 1100 I call. River blank, he bets 2700, I call and he instamucks. Also, he bought in for ~50k.

Onto the hand. I have 18.5k, villain covers.

UTG raises to 200, villain calls next from EP, 3rd guy calls, I make it 1100 with 23 from the CO. Not usually a fan of this type of play, but there were a couple of reasons why I thought this was the perfect spot. UTG folds, villain calls, 3rd player folds. Before the flop is dealt, villain says "I'm gonna try not to bluff off my chips to you this time", which makes me believe he is more likely to bluff (yes? no?).

Flop (2675): 2 3 7 rainbow. Villain checks, I bet 1700, he c/r to 5000 and I call.

Turn (12675): Q. Villain asks how much cash I am playing and then quickly throws 10k into the pot.

What does I do?!