My Friend’s Hidden Charm

What Haeseong tells himself about Jiwoon is that they are friends and nothing else. That stops holding after he accidentally sees the size of a certain part of his best friend's body in the changing area, and finds he cannot put the feeling back where it was. The two have known each other since childhood and spend most of their time together swimming. Haeseong ends his relationship with the person he is dating because of feelings he cannot explain to himself. He and Jiwoon go on expecting different things from each other and reading each other wrong, and neither of them says which side of the line he is standing on.