NLHE - Crying Call

I figured he had me with the quick flop check-call and checkraise on turn, but I've seen players play much weaker flushes the same way, so I called. I'm surprised he checked the river with the king-hi flush.

Stage #1408098355: Holdem No Limit $1 - 2009-05-06 00:18:08 (ET)
Table: AUBURN HILLS (Real Money) Seat #8 is the dealer
Seat 8 - THOMEYORKE ($166.33 in chips)
Seat 9 - MMS71 ($111.50 in chips)
Seat 1 - ROADRUNNER16 ($112.92 in chips)
Seat 2 - KULJME ($52.70 in chips)
Seat 3 - CHRISCD9 ($36.50 in chips)
Seat 5 - POKERPOWERFL ($51.80 in chips)
Seat 6 - RIDERPRIDE39 ($100 in chips)
Seat 7 - KODIAKZERO ($145.50 in chips)
MMS71 - Posts small blind $0.50
ROADRUNNER16 - Posts big blind $1
RIDERPRIDE39 - Posts $1
*** POCKET CARDS ***
Dealt to KODIAKZERO [Jd Qd]
KULJME - Folds
CHRISCD9 - Calls $1
POKERPOWERFL - Folds
RIDERPRIDE39 - Checks
KODIAKZERO - Calls $1
THOMEYORKE - Calls $1
MMS71 - Calls $0.50
ROADRUNNER16 - Checks
*** FLOP *** [2d 4d Qs]
MMS71 - Checks
ROADRUNNER16 - Checks
CHRISCD9 - Checks
RIDERPRIDE39 - Checks
KODIAKZERO - Bets $4
THOMEYORKE - Folds
MMS71 - Folds
ROADRUNNER16 - Calls $4
CHRISCD9 - Folds
RIDERPRIDE39 - Folds
*** TURN *** [2d 4d Qs] [7d]
ROADRUNNER16 - Checks
KODIAKZERO - Bets $8
ROADRUNNER16 - Raises $20 to $20
KODIAKZERO - Calls $12
*** RIVER *** [2d 4d Qs 7d] [8d]
ROADRUNNER16 - Checks
KODIAKZERO - Checks
*** SHOW DOWN ***
ROADRUNNER16 - Shows [5d Kd] (Flush, king high)
KODIAKZERO - Mucks
ROADRUNNER16 Collects $50.80 from main pot