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If he bets again on the turn, which I figure these hands to do, I can fold. If they check, I can take back the initiative by betting, which is what I did.

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I think this is the problem with not raising the flop. Its too easy for someone to bet twice with a weaker king or a queen.

If I sensed the slightest bit of weakness in your flop call, I'd bet again on the turn.

EDIT-- I didn't read the action on the turn that was just posted. This is also something that happens if you don't raise the flop. You don't know if he was betting into you with a queen, or a king.