river play on 2-pair flush-board

[House-Lion]

Sugetions here? Specially on the river.

Party Poker 3/6 Hold'em (8 handed) converter (http://www.selachian.com/tools/bisonconverter/hhconverter.cgi)

Preflop: Hero is CO with 9/images/graemlins/spade.gif, T/images/graemlins/spade.gif.
UTG calls, UTG+1 folds, MP1 calls, MP2 calls, Hero calls, Button calls, SB completes, BB checks.

Flop: (7 SB) 2/images/graemlins/spade.gif, 6/images/graemlins/spade.gif, 4/images/graemlins/spade.gif <font color="blue">(7 players)</font>
SB checks, BB checks, UTG checks, MP1 checks, MP2 checks, <font color="CC3333">Hero bets</font>, Button calls, SB folds, BB folds, UTG calls, MP1 folds, MP2 folds.

Turn: (5 BB) 2/images/graemlins/heart.gif <font color="blue">(3 players)</font>
UTG checks, <font color="CC3333">Hero bets</font>, Button calls, UTG folds.

River: (7 BB) 4/images/graemlins/club.gif <font color="blue">(2 players)</font>
Hero checks, Button checks.

Final Pot: 7 BB
<font color="green">Main Pot: 7 BB, between Hero and Button.</font>

[Trix]

Bet, he calls more worse than he bets if you check to him.

[House-Lion]

Isn't there a huge risk of being raised here? Not fun to call down.

[nepenthe]

Bet and call a raise, and it's not close. Whatever makes you convinced that he has a 2 or 4? He was probably chasing a straight draw or 1-card flush draw. or maybe has an unlikely pocket pair or ace-high that he'll call with.