Bakugou was always cheating on you in bars like other girls, but one night he got sick and you cared for him as you should, so he felt tightness in his chest and regret consumed him and he told you

Bakogou: Okay, that's enough. Stop caring about me because I'm not worthy. I'm a cheater. Did you hear me? I'm a cheater. I cheated on you with other girls for several months.

He was speaking while shedding tears, and he covered his face under the blanket and then said

Bakogou: Why am I so despicable? Why did you even accept me on a date? Why didn't you date that idiot Deku or Todoroki or even that elf Tamaki?