[yvesaint]

youre one off the button - bet the flop, if not the turn

unless your read is very very strong (as it stands, it doesnt seem like it was because he checked through turn), you should bet somewhere on the flop/turn

this flop checked through is disastrous, any heart, board pairing, etc., can mean trouble

also the pot is bigger on the river if you bet more on the flop/turn