Midlle Pocket pair to straight

[walkdoc]

Villain is passive. Played against him early on after he raised w/ QQ in lp and I called w/ KTsooted. Ace and King on flop and he bet, but with hesitation. He beat me on river w/ a Q to beat my trip K's to his full boat. That's my only read.
Did I play this hand wrong? I thought about what he could have on River w/ his re-Raise, but thought no way as he limped in. Suggestions welcome. And, btw, I should have raised him w/ the KT hand and maybe he would have folded. My bad.
Thanks for comments,
Walkdoc

#Game No : 2717979192
***** Hand History for Game 2717979192 *****
$0.50/$1 Texas Hold'em - Thursday, September 15, 21:15:10 EDT 2005
Table Table 25375 (Real Money)
Seat 4 is the button
Total number of players : 9
Seat 3: crispy53 ( $30.18 )
Seat 4: markw0uts ( $35.25 )
Seat 5: x_Flounder_x ( $25.63 )
Seat 6: poker9king ( $65.25 )
Seat 7: JP_TX ( $25.88 )
Seat 10: JL0722 ( $29 )
Seat 9: Walkdoc ( $15.25 )
Seat 2: MoneyMelch ( $24.25 )
Seat 8: marcia666 ( $25 )
x_Flounder_x posts small blind [$0.25].
poker9king posts big blind [$0.50].
** Dealing down cards **
Dealt to Walkdoc [ 9c 9h ]
JP_TX calls [$0.50].
Walkdoc raises [$1].
JL0722 has left the table.
MoneyMelch folds.
crispy53 folds.
markw0uts folds.
x_Flounder_x calls [$0.75].
poker9king calls [$0.50].
JP_TX calls [$0.50].
** Dealing Flop ** [ 8s, Jh, 6c ]
x_Flounder_x checks.
poker9king checks.
JP_TX checks.
Walkdoc bets [$0.50].
x_Flounder_x folds.
poker9king calls [$0.50].
JP_TX calls [$0.50].
** Dealing Turn ** [ Qd ]
poker9king checks.
JP_TX checks.
Walkdoc bets [$1].
etb335 has joined the table.
poker9king folds.
JP_TX calls [$1].
** Dealing River ** [ Tc ]
JP_TX bets [$1].
Walkdoc raises [$2].
JP_TX raises [$2].
Walkdoc calls [$1].
JP_TX shows [ Kc, Ad ] a straight, ten to ace.
Walkdoc doesn't show [ 9c, 9h ] a straight, eight to queen.
JP_TX wins $12.75 from the main pot with a straight, ten to ace.