just ask yourself this
why would a chaebol meddle in the business of his younger lover by sleeping with his younger lovers bestfriend???????? the bestfriend that nanjo thinks is abusing his young lover.
and remember mokyeon was literally joking about nanjo sleeping with him; it was NANJO who took it seriously. NANJO who waited 3 hours for their first affair meeting and nanjo waited for mokyeon AGAIN when he was late the 2nd time they met up; and that second time, nanjo tells mokyeon "you can't get it up again?"
he's been about mokyeons dick from the beginning

I think mokyeon AND nanjo both need help cuz WHATS WITH THE RANDOM SWITCHUP FROM SMACKING MOK TO KISSING HIM