Compared to other dramas, the FL's acting feels a bit weak to me. In my opinion, because I'm a big fan of hers...she's done amazing acting in a lot of other dramas.
I like sml.. He is kind and innocent.. Fl deserves this drama with SML because ML slept with a lot of girls and he had a girlfriend before too, but SML never had any relationship with any girl — FL was his first love.