One handed floater

[HustlerLA]

This is HU and Villain is super aggro. In 15 min he has 3bet 4 times and has bluffed post flop.

Full Tilt No-Limit Hold'em, $2 BB (2 handed) Full Tilt Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

saw flop|<font color="#C00000">saw showdown</font>

BB ($261.25)
Hero ($899.30)

Preflop: Hero is Button with 7[img]/images/graemlins/club.gif[/img], 8[img]/images/graemlins/club.gif[/img].
<font color="#CC3333">Hero raises to $7</font>, <font color="#CC3333">BB raises to $24</font>, Hero calls $16.

Flop: ($47) 6[img]/images/graemlins/diamond.gif[/img], 2[img]/images/graemlins/heart.gif[/img], K[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">BB bets $36</font>, Hero calls $36.

Turn: ($119) 5[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
BB checks, <font color="#CC3333"> Hero?
I was calling to float but now picked up a decent draw. Do I take the free card or try to take the pot?