Besotted by Jo In-sung (Part II)

I can't make up my mind ... which In-sung is sexier? The smiley one? The bothered one? The baffled one? The outright angry one? The smirky-player one?
Gifs from episodes 3 & 4 (here are gifs from episodes 1&2). And we haven't even got to the kissery yet. I need to write to him. I have a book chapter and a paper to write. Seriously can't use this distraction right now!