There's also the scene where he went under the blanket after Youngji picked Bambam over him. His voice trembled so much when he told her, "I want to rest for a while..just 10 minutes. It's fine. I'm okay...I said I'm really okay." Then after he got up to walk out of the room, he stuttered like crazy. I think he said something along the lines of "don't....don't......don't.........know." (I hear molla) He can lie through his words but he certainly can't lie through his body language.