I found the drama to be funny. If you are looking for something light and entertaining then go ahead. If you are looking for something deep or really about real psychology, then you might want to skip this. Han Ye Seul really impressed me as a strong character who always gets to the bottom of the story. She may have been a little naive but was not the stupid female cliche. I liked that she looked for sincerity. The two second lead males Seung Chan and Ji Ho had cute interactions that were always fun to watch. It was a weird idea to that experiment but it was interesting and entertaining enough to watch. The main problem was it dragged on too long. Also it feels like Soo hyun never learns and that was annoying. I still don't know what the point of the doctor was. Overall, I found the drama to be a little over the top and unrealistic, but as a romantic comedy it was good. The romance part was a little disappointing though because too much of it was an experiment, at least to Soo hyun.