I agree totally with Usuyami, here, and it is one of the leaks in my game. When I'm chasing a hand on the draw and it hits on the river, I often become blind to the fact that other hands on the board could possibly beat it. I often end up losing so many of these sets and straights I'm chasing to higher hands on the board.

I think this hand also demonstrates the power of position, and with you acting under the gun on the turn and river, it was an easier trap for him and his nut flush. My only suggestion might be to be more cautious when playing hands like this out of position. His re-raise on the river was a definite red flag that should have you thinking twice. If he had raised pre-flop, you might have been able to pin him on an overpair or set, but the fact that he limped in and called on the flop is some evidence that he was on a draw.

Tough loss, and I don't mean to sound at all like I would have played it differently. I have to get more disciplined about these kinds of situations, myself.