[Ten7Suited]

I agree, only mistake was not checking the turn. Although villain "went into the tank" on the flop, he could have been acting/trapping with a monster. After the jack on the turn gives you a gut-shot, I see no reason to bet here. If you get raised, you have to lay down a draw that if you had hit could have been paid off very well by a slow-played set or overpair. Also, if you were willing to bet the flop and the turn, maybe you would have been better off making a stronger bet on the flop. If he calls you then, you have better information on the strength of his hand.