I liked many things in this drama: The actors.. were really great. Jo In Sung and Song Hye Kyo were both exceptional; all the supporting cast were very good. Kim Bum's character in this leaned towards his role in 'Unstoppable High Kick'.. the unshakeable,loyal friend. He was good, though I didn't really understand why his character did everything he did. The music was on the spot, without being too much. I liked it. The story was good. Wasn't overly dramatic. I couldn't digest some things initially- like the weird definitions of love that people held and what it drives them to do, but the story tries to make us understand even that. I also liked all the very pretty earrings Song Hye Kyo wore in every scene(though it probably has nothing to do with rating a drama). What I didn't like so much: Like I said before, many characters(except the main leads), have a weird understanding of love. And, Though the ending was made out to be picture perfect, it was more like a dream sequence made to please the audience. It didn't answer many questions, or feel naturally arrived at. Also, it gets a bit slow towards the end, and maybe there wasn't enough 'chemistry' between the leads or what- but I didn't really care if they got together or not in the end. In fact, I think I would have preferred a more real ending to this.