The third point of view:
This was a big opportunity for him, he could finally show Ailee how much he felt about her. However, Neon chickened out.
When he saw the way Ailee's eyes widened and her lips slightly trembled, he mistook that gesture as her being scared by his move. If she was this frightened of him already, what happens when he confesses his feelings?
Neon was scared that she would never talk to him. That she would reject him and their relationship won't be the same as well. So, he rather they remain this way and he gets the opportunity to see her every day as long as he wants rather than ruining it all. Losing his friendship, his brotherhood - the camouflage he used to hide his affection for her like a coward.
