I've dropped this title near the end, because it was boring me, but not in a bad way.
The story is really well made, even if I am not a fan of Park Hae Jin acting, Park Seo Joon made me watch this drama till I was tired of it. The storyline is real, I can agree with many other people who declared that this drama, created his characters on the different mental illness, and that's a really beautiful thing of this show. I loved how each one is characterized ( ex: the jealous one, the lonely one, the possessive one, the insecure one, etc...).
But, nearby the end in this drama, everything started to get messy and confusing like they ran out of ideas and made, for me, difficult to follow, really sad sicne it had a really good potential since the start!
p.s. (I've just gone to read the spoiler just to end this drama once and for all)...