Call or Fold?

[Los Feliz Slim]

Tough one, still not sure if I made the right decision. I bet the river thinking he'd call with a 3 or even AK and it bit me in the ass. Do I still call?

PokerStars No-Limit Hold'em, $1.00 BB (8 handed) converter

UTG ($12.20)
UTG+1 ($81.85)
MP1 ($71.10)
MP2 ($99.50)
CO ($98)
Button ($29.25)
SB (Villain)/ ($88.80)
Hero ($166.70)

Preflop: Hero is BB with 5[img]/images/graemlins/diamond.gif[/img], 5[img]/images/graemlins/spade.gif[/img].
<font color="#666666">4 folds</font>, CO calls $1, Button calls $1, SB (Villain)/ completes, Hero checks.

Flop: ($4) 3[img]/images/graemlins/club.gif[/img], 6[img]/images/graemlins/heart.gif[/img], 6[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(4 players)</font>
Villain checks, Hero checks, CO checks, Button checks.

Turn: ($4) 6[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(4 players)</font>
Villain checks, <font color="#CC3333">Hero bets $3</font>, CO folds, Button folds, Villain calls $3.

River: ($10) 8[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
Villain checks, <font color="#CC3333">Hero bets $5</font>, <font color="#CC3333">Villain raises to $23</font>, Hero...?