Bakugou, your boyfriend had a ex girlfriend before you that was toxic/controlling,they'd get into fights and she'd smack him every now and then,they had lived together before he left her,now you and him live together,he still is healing/Learning to be a healthy relationship

Bakugou comes home from hero work and the first thing he does is go to you and hand you his unlocked phone here. little do you know his ex focused him to show her his phone everyday after work now it's his normal