Precarious top two - lost on river

[TheWorstPlayer]

Villain in this hand is something like 75/5 or whatever. Very loose postflop, too. BB is insanely loose payoff machine as well which is a big reason why the preflop call is a no-brainer. BB is obviously going to call with any two and I will play any pot with him that I can as long as I have halfway decent cards. What do I do on the river? Feel free to comment on other streets as well.

Party Poker Pot-Limit Hold'em, $ BB (6 max, 6 handed) converter

CO ($175.91)
Button ($204.20)
TWP ($366.30)
BB ($171)
UTG ($555.40)
MP ($192.25)

Preflop: TWP is SB with 6[img]/images/graemlins/diamond.gif[/img], 4[img]/images/graemlins/diamond.gif[/img]. TWP posts a blind of $1.
UTG calls $2, <font color="#CC3333">MP raises to $6</font>, <font color="#666666">1 fold</font>, TWP (poster) calls $5, BB calls $4, UTG calls $4.

Flop: ($24) 4[img]/images/graemlins/spade.gif[/img], 6[img]/images/graemlins/spade.gif[/img], 2[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(5 players)</font>
<font color="#CC3333">TWP bets $22</font>, BB folds, UTG calls $22, MP folds.

Turn: ($68) 3[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">TWP bets $66</font>, UTG calls $66.

River: ($200) 9[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
TWP...?