Crazy call?

[FlyingStart]

Ultimate Bet No-Limit Hold'em, $.50 BB (10 handed) converter

Button ($24)
SB ($75.05)
BB ($51.10)
UTG ($23.80)
UTG+1 ($37.75)
UTG+2 ($23.10)
MP1 ($22)
Hero ($49.25)
MP3 ($18.55)
CO ($77.55)

Preflop: Hero is MP2 with A[img]/images/graemlins/diamond.gif[/img], Q[img]/images/graemlins/heart.gif[/img].
<font color="#666666">4 folds</font>, <font color="#CC3333">Hero raises to $2</font>, <font color="#666666">1 fold</font>, CO calls $2, <font color="#666666">3 folds</font>.

Flop: ($4.75) K[img]/images/graemlins/club.gif[/img], Q[img]/images/graemlins/diamond.gif[/img], T[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, CO checks.

Turn: ($4.75) 5[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets $3.5</font>, CO calls $3.50.

River: ($11.75) 6[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">CO bets $11.75</font>, Hero calls $11.75.

Final Pot: $35.25

The game is pretty loose looking at the players/flop (40%), but this is my first orbit

[yvesaint]

I'd like it better if you bet the flop, he called, turn was checked around, then you check-called the river.

[FlyingStart]

So you recommend betting the flop here?