S Diary is a romantic comedy, but it has a serious/sad feeling to it. Kim Sun Ah plays Jini very well. Her character changes depending on the person she is with---Lee Hyun Woo the priest, Kim Soo Ro the playboy, and Gong Yoo the artist--- during the look back on her relationships. At first when she goes to speak to each ex-boyfriend she seems to be looking for confirmation that she was loved and then seeks revenge against the men that she feels didn't love her. The revenge part is where it becomes actually funny. In the end she realizes the truth, that no matter what kind of relationship a person is in or how that relationship ends there is meaning. SPOILERISH >>> I like how at the end we get a glimpse of how the men in her lives really felt about her during their relationship. The plot is pretty good, the acting is excellent. This is the kind of movie to watch for fun. Plus Kim Sun Ah is in it.