I wanted to love this drama. The main guy is one of the few actors I actually look forward to seeing. His kissing skills were just as amazing in this drama as it is in his other dramas. Main woman was independent, a con artist, but still very likable. I liked that she was an older single mom as well, though her kid wasn't in the show at all. However, the experiment was ridiculous, he was breaking all kinds of rules if you studied even intro to psychology (the biggest being getting the subject's consent) and he then engaged in a romantic relationship with her. Chemistry between them was good but he LIED to her like 5 times about this darn experiment. First two times were understandable but he would not let go to this idea about love. It just got ridiculous. Almost until the end he was trying to trick her which made me very upset and kinda ruined the plot for me.