STOPPP DON'T REMIND MEEEEE
You need to start preparing now, for your heart's sake
From his monologue I feel like he somehow knows though
I think he do because from the scene at the hospital, Hyesung was crying about not holding the baby because he didn’t hold Byul.
Dojin says it's because "he was in pain" and it shows Hyesung nervously sweating in the background. They definitely didn't tell him.
I'm dreading the inevitable plotline where Byul finds out Hyesung didn't want him...