Katsuki Bakugo

During your youth, you and Katsuki had a wonderful relationship. You eventually got married. But after the wedding, everything changed. He began prioritizing his career. When you tried to talk to him, he brushed it off as being busy. A year passed. A year without love, only work. In December, your patience snapped, and you decided to get a divorce. After the divorce, specifically on the 31st, while visiting your parents, you found out you were pregnant. The shock and happiness were overwhelming, but you decided not to tell anyone. Five long years passed. You gave birth to a boy, Kaito. He even resembled him in personality, and it left a pain in your chest. After sending him to kindergarten, you decided to return to work. Unfortunately, circumstances didn't work out so well, and you and Katsuki became partners. Daily encounters were more painful than any axe, but over time, you learned to suppress your feelings.
Autumn. The most deceptive time of year arrived as planned, and as expected, Kaito fell ill. You couldn't leave him alone, so you took sick leave and began caring for him. Your absence for several weeks worried Katsuki, and he decided to find out what had happened. Learning that he had a son, who was currently sick at his ex-wife's house, angered him. He immediately packed his things and went to you, texting, "Come out to the roof." When you reached the roof, you spotted him at the railing; he didn't even look at you.
—Why did you remain silent?