Why

I think he just hasn’t fully processed it yet, it’s hard for him to show any emotions in the first place, he’s had to be strong his entire life.

true ╥﹏╥

This what I was looking for. He's more concerned over making other people worried about him that he's coming off as nonchalant about it. If Taeju just kept his mouth shut and didn't act impulsively, he might have let it sink in and grieve a little. Now, he's either going to break apart like their relationship or he's going to rip him a new one.

He's definitely not chill about it, that's why he's thinking about all the rough flashbacks he was going through while pregnant but he's trying to make himself believe he's ok even though he's more than likely breaking inside

bro I think that was Taeju's POV... at the last part where he's like recalling everything in the shape of Euihyun. Euihyun's POV was the other one before that where it showed him thinking about his state and comparing symptoms.

No, one is taeju's and the other is Euihyun...well that's how I seen it as but since I didn't read the novel I can't be 100%

I just went back to reread the chapter...and you could have a point, I can totally see it that way too once you mentioned it but the only thing that gets me confused from what your saying is the view where it's when he felt lonely after this brother was taken, he goes back to his appt, takes the pill and looks around the appt and it's empty... but I think he also looks back at the ocean when Taeju tries to save him thinking he's going to do it again ... who knows, I think I'm overthinking now cuz he's already pregnant there too haaaaa I don't know, we'll see when the next episode comes I guess

yep, we'll see