I suspect, that he was the first one who fell in love, but I don't know when. Maybe, when he started singing?
I liked their storyline, but I didn't get the point, when they started to be attracted to each other.
I think it was more of a "we love each other, but won't act on it unless we absolutely have too in case it ruins our friendship and makes one of us have to resign" thing.
What do you think?