Does there brains work normaly ? Because i desagree so much with some reaction the 2 of t...

Does there brains work normaly ? Because i desagree so much with some reaction the 2 of them get... ? Why is that only JY who's adapting and questionning himself (like about is past reaction in hs) toward CH ? Because he was also acting weird and cold. And the stalker like things, the time of answer, etc ? What the hell ? Who would really accept that ??? Even the sex it was kinda weird especially when they were arguing, Who would think of that in that situation ???

Even though the story was kinda great