No homo but

maybe he finds it soo romantic ╮(￣▽￣)╭
i also remember the gym teacher also made the same reaction seeing doo-jon and heewon running towards each other(first few chapter)

Maybe it also means their feelings are not that deep that instead of fighting their feelings, they end up letting it go. i like it though no heartbreaks (▰˘◡˘▰)