Bottom two facing heat

[markuisis]

I was taking a shot at a 400nl game, I open this cause the game had been playing conservative pf and not 3betting light (its prob marginal but w/e). Villain is nitty 15/12 and seems pretty passive, earlier he flat called a c-bet in position with the nut flush draw on the flop. Whats my action and y? Dunno y text is red btw, doesnt mean I bet or anything.

Full Tilt Poker, $2/$4 NL Hold'em Cash Game, 6 Players
LeggoPoker Hand History Converter

SB: $409.35
BB: $374.50
UTG: $235.90
Hero (MP): $675.20
CO: $506.40
BTN: $425.95

Pre-Flop: 6[img]/images/graemlins/heart.gif[/img] 9[img]/images/graemlins/heart.gif[/img] dealt to Hero (MP)
UTG folds, <font color="red">Hero raises to $14</font>, CO folds, BTN calls $14, 2 folds

Flop: ($34) 6[img]/images/graemlins/diamond.gif[/img] 4[img]/images/graemlins/club.gif[/img] 9[img]/images/graemlins/club.gif[/img] (2 Players)
<font color="red"> Hero bets $27, <font color="red"> BTN raises to $80, Hero?

If u call, what do u do if turn is the 5 [img]/images/graemlins/club.gif[/img]?, what about the 2 [img]/images/graemlins/spade.gif[/img]? thx, who thinks the 5 [img]/images/graemlins/club.gif[/img] might actually give us a better chance at winning this hand depending on his actions?