Villain- Young, white kid, 20's. Seems to be competent from what i have seen so far. Playing TAG. Has accumulated over $3,000. Says he has been at the table for 18+ hours. Sitting directly to my left, chatted him up a little, def a thinking player.
Folds to Hero UTG+2 with KK opens to $25.
Villain 3bets to $75
Folds back to Hero who thinks for a minute and calls.
($150) 10 5 2 rainbow
Villian bet $100
($350) As brings back door flush
Villain snap bets $200
Basically I am wondering if turning my hand into a bluff on this river is best since it will fold out everything except AA and QQ. He bet the turn so fast that it was like he had already decided he was going to do it no matter what and i thought KK was still going to be best a solid amount of the time. So anyway, is this just a check/fold or is there something more optimal?