My expectations weren't high due to reviews but I must say this is one of the best series where all plot is focused on romance. Is it messy? Yes, but I enjoyed it.
I think as long as you won't have relationship smiliar to Kluen and Dao then you might see it as stupid but let's be honest; for some people feelings are hard to understand and many sucks at communiation. I can relate to Kluen tbh. Sometimes we can love someone but hurt them because we don't know how to deal with our own feelings.
I didn't enjoyed any BL like this for a long time. JoongDunk absolutely stole my heart, especially Joong. In Dunk case; you can see in hidden agenda and THK how he improved since this series.