What to make of villain's line?

[Haiku]

Villain hasn't gotten out of line over a small sample of hands. He's running about 29/10ish. I turned top two pair, but the way he check/called the flop then led the turn really scared me. I folded the river. It felt really weak, but I just got a really bad gut feeling that I was crushed.

Party Poker No-Limit Hold'em, $ BB (6 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

MP ($35.13)
CO ($102.50)
Button ($96.55)
SB ($32.49)
BB ($90.53)
Hero ($120.85)

Preflop: Hero is UTG with J[img]/images/graemlins/diamond.gif[/img], K[img]/images/graemlins/diamond.gif[/img]. SB posts a blind of $0.50.
<font color="#CC3333">Hero raises to $3</font>, <font color="#666666">3 folds</font>, SB (poster) calls $2.50, BB calls $2.

Flop: ($9) 5[img]/images/graemlins/diamond.gif[/img], K[img]/images/graemlins/spade.gif[/img], 5[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(3 players)</font>
SB checks, BB checks, <font color="#CC3333">Hero bets $6</font>, SB folds, BB calls $6.

Turn: ($21) J[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">BB bets $12</font>, Hero calls $12.

River: ($45) 9[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
BB calls $69.53 (All-In), Hero folds.

Final Pot: $114.53