Imo, it really is not a romantic feeling from the ML. He only wanted to feel the satisfaction of having the MC by his side, not love but obsession. There wasn't anything romantic at all.
"A bit rocky"? It wasn't "a bit", it was too much. I cannot fathom this at all. I am not quite sure if he even told Kim Dan that he truly loves him or maybe he did but because of how everything unfolded, I missed it out? I dunnoh.
Imo, it really is not a romantic feeling from the ML. He only wanted to feel the satisfaction of having the MC by his side, not love but obsession. There wasn't anything romantic at all.