I was watching a MV posted on You Tube - scenes between YH and his MLC. Very nice. This is the link
http://www.youtube.com/watch?v=tfngk8y8JG0
And the person who uploaded it said that he thought the time YH really fell in love with MLC was, "I think it's when LC used her own blood to revive YH. You can just tell that he really loved her but, at the same time, he was torn between fame and obscurity. YH is a very complex character. Yes, he's a villain but he also had many good qualities. He was just too negatively influenced. Michael Miu played this role extremely well. I haven't seen YH portrayed better by any other actors and I don't think there will be."