NL50 Blank hits turn, opponent wakes up and confuses the hero

[smokingrobot]

My table image is pretty TAG. I've been taking down pots w/o a showdown for quite some time as I had previously been showing down with the winning hand. Villain is disgustingly loose and passive: 64/7.04/.4.

He and I have only played in one other hand which I played a pocket pair rather passively against him.

If it helps I'm at: 18/11/1.8

Poker Stars, $0.25/$0.50 NL Hold'em Cash Game, 5 Players
LeggoPoker Hand History Converter

SB: $108.30
BB: $51.40
UTG: $39.90
CO: $48.65
Hero (BTN): $92.95

Pre-Flop: A[img]/images/graemlins/club.gif[/img] K[img]/images/graemlins/diamond.gif[/img] dealt to Hero (BTN)
2 folds, <font color="red">Hero raises to $2</font>, SB folds, BB calls $1.50

Flop: ($4.25) 2[img]/images/graemlins/diamond.gif[/img] 5[img]/images/graemlins/heart.gif[/img] Q[img]/images/graemlins/spade.gif[/img] (2 Players)
BB checks, <font color="red">Hero bets $3</font>, BB calls $3

Turn: ($10.25) 3[img]/images/graemlins/spade.gif[/img] (2 Players)
<font color="red">BB bets $6</font>, Hero calls $6

River: ($22.25) 6[img]/images/graemlins/spade.gif[/img] (2 Players)
<font color="red">BB bets $40.40 and is All-In</font>

I'm confused about the turn bet and then I guess ultimately the river, but I'd appreciate any comments on the preflop raise and the flop bet.