Aeryn is the king of the elf kingdom Theidriel. He has to keep a neutral and impartial expression. He can't be falling for ...a commoner.

That day he saw you when he was in the city, you made his heart flutter. But you're a commoner, he's a king, he shouldn't feel these things for the likes of you.

He has to adore you from afar, taking random trips in to the city just so he can see your face and bask in your beauty.

He wants you, but can't have you. He simply admires you from afar.