It's a bad fold but i don't understand the hh correctly, does he raise to a total of $12 or $12 more? 67 seems more likely than QT. 67 doesn't seem likely since he limped UTG unless it was SOOTED! QT is still a maybe though, moreso if he had QTs and a backdoor flush draw. I think a 3rd bet on the turn means at least 67, maybe a higher set. It's def. close because he could have a higher set but more likely has a straight and you have the odds to go for it.