9 player local $10 tourney, "Pokerstars schedule," 1/2 hour blinds, 2000 starting chips.

10/20. I'm in MP after 3/4 of the first orbit. Played two hands, miss and fold to some decent action, so I'm down to about 1800.

I'm dealt , hearts. UTG limps, very aggressive EP raises to 200, folds to me. This guy will follow up on the flop 90% of the time with a pot sized bet, in or out of position, and likes to play almost any pocket pair very strong preflop. Behind me are two semi-loose passive players. UTG looks ready to fold when it comes back around.

I call. If either of the passives call, they increase my implied odds in trying to catch a good draw or two pair. If it is HU, then I'm fairly confident I can represent any A or K that shows up, giving me a lot of folding equity.

No one else calls, and we go HU to the flop. I flopped an open ended strait and flush draw. He thinks a moment or two, and then bets 400; the pot is 850. I have a little over 1600.

Normally this guy bets out fairly quickly when he's missed entirely (there isn't much to think about when you get the flop we did and you have something like AK), so he's got an overpair or a set. If he's got an overpair I am a slight favorite, and if he already has the set then I am a 3-2 dog. And if I am wrong and he does have something like AK, he's likely to fold if I raise, and may even lay down a hand like 99. Given all of that and the size of the pot, I raise all in, thinking either I'd buy it right there or face at worst a 3-2 dog.

He called with 55, and caught a boat on the turn.

Should I not have even played this hand preflop?