Get called by a regular on the button (200NL)

[I_Like_Beer]

Villain is a multi-tabling regular TAG , who I think is pretty good. His stats are 20/15 with aggression stats of 3/3/1.9/1.8.

I find that when a regular TAG calls in position, they are going to be raising my c-bet about 75% of the time.

Anyways, I flop Top Pair, plus a flush draw, plus a gutshot. What to do with his fairly small raise on the flop? Push? Raise to what? Is flat calling ever good?

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

BTN: $225.20
SB: $184.65
BB: $293.50
UTG: $234.45
MP: $197.30
Hero (CO): $197

Pre-Flop: 6[img]/images/graemlins/spade.gif[/img] 5[img]/images/graemlins/spade.gif[/img] dealt to Hero (CO)
2 folds, <font color="red">Hero raises to $7</font>, BTN calls $7, 2 folds

Flop: ($17) 4[img]/images/graemlins/spade.gif[/img] 6 2[img]/images/graemlins/spade.gif[/img] (2 Players)
<font color="red">Hero bets $13</font>, <font color="red">BTN raises to $34</font>, Hero ????????

Thanks