Let me start off my saying that I am not a big Park Shin Hye fan. I get annoyed with her samey parts and lack of kissing skills. But, upon hearing that Lee Jong Suk would be joining the cast, I got excited. And upon watching, I knew why. His talent for turning words on paper into a realistic, emotionally taxing, and brilliant character, made this show amazing. Park Shin Hye's acting seemed to improve throughout the entire show, and I actually enjoyed her part. It was a story that grew on me, the emotions of the characters is what truly brought this show together. Without the acting talent of Lee Jong Suk, I don't believe this show would've been such a hit.