To Bet Or Not To Bet?

[Lucky]

villian is not good, 37/11/2.6, will bet it up and pay off a bit. So I like to play fairly tight against him, excercise pot control, figuring I'll get paid if i hit.

NL 5/10. Effective stacks 1200. Folded to me in MP. I make it 30 with AdKd. Button calls. Rest fold.

Flop is [5D, 8S, 9C] (75 in pot)
I bet 45. Villian Calls.

Turn is 6D. (165 in pot)
I check, villian bets 45. I call.

River is 3D. (255 in pot)

I....???