KK river fold

Thoughts?

***** Hand History for Game 4493203496 *****
$100 NL Texas Hold'em - Sunday, June 11, 18:52:53 ET 2006
Table Yacht Club (Real Money)
Seat 6 is the button
Total number of players : 9
Seat 9: Jolene118 ( $81.50 )
Seat 5: arennhack ( $102.50 )
Seat 2: DrnkenGamblr ( $150.15 )
Seat 8: dmaried ( $106 )
Seat 6: LuvPlayPokah ( $97.50 )
Seat 1: v09s82 ( $56.50 )
Seat 4: brokebackboy ( $89.40 )
Seat 3: ahp5000 ( $100 )
Seat 10: smokey92111 ( $101.80 )
dmaried posts small blind [$0.50].
Jolene118 posts big blind [$1].
** Dealing down cards **
Dealt to arennhack [ :Kc: :Ks: ]
smokey92111 calls [$1].
v09s82 folds.
DrnkenGamblr folds.
ahp5000 folds.
brokebackboy raises [$4].
arennhack calls [$4].
LuvPlayPokah folds.
dmaried folds.
Jolene118 folds.
smokey92111 folds.
** Dealing Flop ** [ :Jh:, :2h:, :9d: ]
brokebackboy checks.
arennhack bets [$8].
brokebackboy calls [$8].
** Dealing Turn ** [ :4h: ]
brokebackboy bets [$10].
>You have options at Table 96113 Table!.
arennhack calls [$10].
** Dealing River ** [ :Tc: ]
brokebackboy bets [$30].
>You have options at Carpe Diem (No DP) Table!.
>You have options at Table 96113 Table!.
>You have options at Table 96113 Table!.
>You have options at Table 97437 Table!.
arennhack folds.
brokebackboy does not show cards.
brokebackboy wins $74.20

Do you think he hit a set on the flop either Js or 9s? Raise-check/call-bet-bet is a weird line and Im not realyl sure what to think of it. What reads do you have on this player? Id probablt reraise preflop, bet the flop and the turn Im not too sure how Id play with him betting after check/calling the previous street. Since you never reraised him, a hand like AK/Q/KQs isnt out of the question so he could have made his flush, but he would still probably bet that flop. I dont think a fold on the river is horrible, but reads would help here.

When this hand came up it was early in my session so I didn't have any reads on him. The more I think about it though, I think he must have hit the flush. His check/call line on the flop makes since if he doesn't want to get raised and he correctly puts me on an overpair. It keeps the pot small until he hits his hand. The fact that he was not afraid of the 3 hearts out there and bet relatively large on the river told me I was beat. Besides, the only realistic hand I think I am beating here is QQ and I think they definitely bet out on the flop.