he switched for Wo-woon. itʻs in the earlier chapters - they were at the hotel pool and he was thinking it through/discussing it with Wo-woon right before they became intimate.
AHHHHHHHHHHHH RAHHHHHHHHH WUHHHHHHH I CANNOT OH MY GOD JAESHIN JAESHIN “ SAY THAT IT’S NOT HIM, BUT ME THAT YOU LOVE.” OH MY GOD IM FUCKING GOING FERAL RAGHHHHHHHH I CANNOT HUHHHHHUUHHHHHUHHH THAT WAS SO FUCKING SMOOTH
AHHHHGGGGHHHH AND LEE NOK’S THE ONE WHO SAID I LOVE YOU FIRSTTTT OML IM FREAKING CRYING