NL200$ 6-max, 6,6 semi-deep

[SirThomas]

MP is a Loose Fish.
BB is a 19/13 Tag, but 3-bets quite much despite his nitty stats.

I have played 20/18 TAG..

Party Poker, $1/$2 NL Hold'em Cash Game, 6 Players
LeggoPoker.com - Hand History Converter

UTG: $147.78
MP: $227.22
Hero (CO): $270.10
BTN: $60.05
SB: $182.75
BB: $300.33

Pre-Flop: 6[img]/images/graemlins/diamond.gif[/img] 6[img]/images/graemlins/heart.gif[/img] dealt to Hero (CO)
UTG folds, <font color="red">MP raises to $4</font>, <font color="red">Hero raises to $18</font>, 2 folds, <font color="red">BB raises to $45</font>, MP folds, Hero calls $27

Flop: ($95) 7[img]/images/graemlins/diamond.gif[/img] 4[img]/images/graemlins/heart.gif[/img] 5[img]/images/graemlins/spade.gif[/img] (2 Players)
<font color="red">BB bets $66</font>

<font color="red">Hero?

We will never fold PF right?

What is the best option on the flop?