Crying call when I "know" I am beaten? (10/20 in HUGE pot)

[marand]

CO is a LAG
UTG is unknown (New to the table and not enough stats on him to be meaningful)

Party Poker 10/20 Hold'em (6 max, 6 handed) converter

Preflop: Hero is Button with K[img]/images/graemlins/heart.gif[/img], Q[img]/images/graemlins/heart.gif[/img].
UTG calls, MP calls, CO calls, <font color="#CC3333">Hero raises</font>, <font color="#666666">1 fold</font>, BB calls, UTG calls, MP calls, CO calls.

Flop: (10.50 SB) 2[img]/images/graemlins/spade.gif[/img], 8[img]/images/graemlins/heart.gif[/img], 5[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(5 players)</font>
BB checks, <font color="#CC3333">UTG bets</font>, MP folds, CO calls, <font color="#CC3333">Hero raises</font>, BB folds, UTG calls, CO calls.

Turn: (8.25 BB) 2[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
UTG checks, CO checks, <font color="#CC3333">Hero bets</font>, <font color="#CC3333">UTG raises</font>, CO calls, <font color="#CC3333">Hero 3-bets</font>, UTG calls, CO calls.

River: (17.25 BB) J[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
UTG checks, CO checks, <font color="#CC3333">Hero bets</font>, UTG calls, <font color="#CC3333">CO raises</font>, Hero calls, UTG folds.

Final Pot: 22.25 BB

Would you play it any other way on any street?
What about the river call? Almost always beaten, but will I win it 5% of the time?