[checktheriver]

Why didn't you raise flop ? You have a set in a 3bet pot, it's not really the time for pot control. You have to make Asx ,Ksx pay their draw, and if a fourth spade comes in you'll either be behind or get no action. And if he has a flush already your equity is still decent so I'd really love to get it in on this flop.

As played the turn is pretty tough, Villain's line is really weird. I'd probably end up calling hoping he has an overpair, but this might be wrong. This is a read-dependant situation imo.