I enjoyed it for a while, until the pacing got weird. I don't know, it's just that Gu-Won was introduced as a heartless, egoistical, and cold character. Then suddenly after they started faking their relationship for the safety of the female protagonist, it escalated so incredibly quickly. I did not recognize Gu Won AT ALLLL. The switch up was crazy, it was as if that side of him disappeared completely. The writers and actor just didn't ease slowly into the change falling in love would cause his character. If that makes any sense.