
The way I interpret this is crazy I feel like he thought he was only that protective and such because he's pregnant not because of Euihyun, then how would he treat him if his not pregnant...
Or the way the panel draws MC black transfer to ML like the one that transfers to him is him not forgiving himself and the way MC in the beginning wants to end everything including himself. Overthinking!!!! let them have peace!!!!!Σ(  ̄□ ̄||) LET THEM JUST HEAL AND LOVE!!!

I thought about this first but in taeju's flashback he remembers euihyun screaming at him after his rut, so maybe it's the other way around, he probably think euihyun got attached bc of pregnancy. And taeju alr confessed even before the pregnancy, hell he got car accident bc his emotions towards Euihyun
I imagine outside the dungeon Yoohyun knocking heavily even to the point of hurting his hand, his breaths came in ragged gasps, tears streaming down his cheeks. He trembled as he shouted "hyung" countless times, desperate and powerless.
And as other S-class watched, their hearts heavy, seeing his back normally stoic facade crack revealing the fragile boy beneath the S-class. At this moment, he was just a young boy, paralyzed by the terror of losing his one and only family—Yoojin.