I loved everything about this drama. From the acting/story/characters to the relationships/friendships/side stories. Lee Sung Kyung's acting was top notch and she pulled off Kim Bok Joo so well. I absolutely loved the transition from friends to lovers and the chemistry between Nam Joo Hyuk . I adored the innocence of the drama while still portraying important issues such as depression. The friendships and relationships were so healthy and so refreshing to watch. Honestly I can rewatch this 10 times and I would not be bored. My all time favourite drama.