I started to watch it because it is a very quick drama and it seems to be light.
I kept watching because the ML and FL made a great couple, with lots of chemistry. I love the kisses scenes. Be biggest issue seems to be the insecurities of the FL about the love of the ML. (Well he had a strange 3 years long term contract relationship to show his love, yet he needed more time). By the end. It is not the real issue.
So when I was getting all happy with the end...

Spoiler
a very unexpected plot twist. I mean, it was fine written, but I didn't like it at all.
Life is hard the way it is. I don't need to see it like that on TV. Why should he be like dead?

So if you expect a very happy ending, you will not gonna find here.

It is nice, quick, great couple, beautiful kisses scenes, just the plot twist that I didn't appreciate.
I want another ending