[Seether]

Im playing in a very good 3 handed 60/120 live game. My opponents have been playing very loose and fast with draws/total bluffs as well as strong hands.

Im in the bb and am dealt K [img]/images/graemlins/heart.gif[/img]J [img]/images/graemlins/heart.gif[/img].
button raises, sb 3 bets, i call (their raising is so standard and my hand could very likely be the best), button caps, 3 to the flop.
Flop comes Q [img]/images/graemlins/heart.gif[/img] 9 [img]/images/graemlins/heart.gif[/img] 7 [img]/images/graemlins/heart.gif[/img]
Sb bets I call button raises sb calls i call.
Turn is 8 [img]/images/graemlins/spade.gif[/img]
Sb bets, I raise, button folds, sb 3bets, i 4bet, sb 5 bets, I call
River is a blank, he checks, I check?

I just couldnt see what he was 5 betting with on that turn that wouldnt be the nut flush. Do you guys bet the river when checked to? I decided not to because I would have felt totally outplayed had he check raised me with the nut flush on the river.