2/4, Am I getting bluffed?

[Tokyo!!]

Villain is bufo523, 22.3/18/3.6 regular winner. I can't really put him on a hand here except AcXc I suppose b/c there was no c-bet. We don't have a bluffing history, and I'm pretty sure he gives me some respect and views me as definite TAG. It's push/fold imo, but which?

PokerStars No-Limit Hold'em, $4 BB (6 handed) internettexasholdem.com

MP ($400)
CO ($80.20)
Button ($253)
SB ($96)
Hero ($400)
UTG ($119.15)

Preflop: Hero is BB with T[img]/images/graemlins/club.gif[/img], T[img]/images/graemlins/diamond.gif[/img]. CO posts a blind of $4.
<font color="#666666">1 fold</font>, <font color="#CC3333">MP raises to $20</font>, <font color="#666666">1 fold</font>, Button calls $20, <font color="#666666">1 fold</font>, Hero calls $16.

Flop: ($66) 4[img]/images/graemlins/club.gif[/img], 7[img]/images/graemlins/club.gif[/img], J[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(3 players)</font>
Hero checks, MP checks, Button checks.

Turn: ($66) 4[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">Hero bets $48</font>, <font color="#CC3333">MP raises to $155</font>, Button folds, Hero ???