i feel bad for the ML after learning about his backstory but what he did to the FL was not okay. His actions could be seen as irrational and bad to us, which it totally is, but i do somewhat understand (not agree) for why he actually did it.
(incoming yapping lol)
He killed people, fought and survived just to see her again. He put her on a pedestal, seeing her as some form of divine being, not daring to stand next to her since he’s merely a human, or even less than that. His inferiority complex came from all the brainwashing, drugs etc that he got during his training. It’s not something you can suddenly forget.
During that incident with the traitor, the only thing that kept him going was her even though she doesn’t know him. Thinking that if she would’ve seen him in this state, she would’ve been enraged, sad and pitied him, yet again seeing her as a divine being, but the moment he actually met her, it was totally different from what he imagined.
She was not divine, she merely saw his friends that died during the mission as something granted, it’s for the nation so it doesn’t matter.. His image of her was shattered, she wasn’t the person that he thought she would’ve been, his ‘god’ betrayed him. All his life he fought and fought just to be next to her, but she was no different than her father. His inferiorty complex + all the ‘emotion’ drugs + the torture during the incident + killing his friend already broke him but this added fuel to the fire and eventually turned him the way he is rn.
What he did was wrong but totally understandable. I personally found him really written. I think that it would be the best for both of them if they find someone new, there are too many scars in their relationship. Another possibility is them not meeting each other for some time, healing themselves and going to therapy. They should also work on their communications.