I think this is too heavy for me to understand but did he just kill himself because ami have a child of that director? -
not just that, his past stuck with him everywhere. he was obviously mentally unstable from the neglect and verbal abuse, and his only light was Ami. he screwed it up with her, and Ami just u[ left him and then got pregnant with the director's kid. when Taeyoung(?) found out, it destroyed his last hope at ever being happy, so he killed himself because he didn't think he'd ever be loved, like the mother said.
The translation is terrible it's horrible to follow up the details but I get the general idea and this is a very typical. Nothing special about it. She will find out how the mao dude is a douche (lmao the jin dude just told her that DUHH can't she be any more stupide than she already is?) And after a hated relationship with the jin dude they will fall in love and he will turn out to a noble ot a big shot considering how much money he offered if she lost the bet. I'm so disappointed. The chapters keeps dragging for no reason and the story isn't original whatsoever and the translation isn't good either so I'm dropping iy.
PS: what I said isn't spoil. It's my own prediction but tbh it's too obvious.