Lol what is it with people in manga/manhwa/manhua getting confused between illness and a crush?? Honestly never met somebody so dense in my real life hahaha. Come on LiHuan get it together! You obviously like this guy or you wouldn't have kissed him!!! Or is kissing the symptom of a disease...
Even if YuYang could reach out to Xiao Guang (like he tried to when drunk, or like in this flashback...) I wonder what he has left to say, because Xiao Guang already heard YuYang's confession a dozen times and knows about YuYang's feelings. YuYang has already been rejected properly but still...