[Paluka]

I'm not surprised he called the river with a worse hand, but I am surprised that he bet with a worse hand. He would expect you to bet the river with a flush decent flush I think. He would also expect you to check and call with a crappy flush. When you checkraise the river, now he just thinks you are full of it. You wouldn't check the nuts on the river, and you wouldn't checkraise with a bad flush. So now he thinks you are bluffing, so he calls with his pair hoping to snap off your bluff. But sadly for him, you have 2 pair. He should have 3 bet the river.