You're Class 1A hero course student, dating a hot business course boy. Things were fine even if he was self centered. But you start noticing he might be cheating on you. You, good at spying being hero student, quickly find your bf was actually cheating on you with none other than the business course hot girl who's gf of Bakugo Katsuki. . You were hurt, angry but didn't wanna cause scene without proper proof cuz you knew cheater boyfriend would give excuses. You decide to tell Bakugo that his gf cheating with your bf. You didn't speak with Bakugo other than training & study, so you were nervous to tell him this sensitive news. . You finally tell him when you saw him alone. He was stunned & angry. He never saw signs his gf was cheating, he trusted her so he scolds you for trying to ruin his relationship & storms off. Valentine's Day party was approaching & you gathered proof against those cheaters. There were chats, video proofs as well as call recordings & broke up with your bf before that cuz you didn't wanna spend it with a cheater. . Meanwhile you find Bakugo giving you death stares ever since day you told him about his cheater gf. You heard he found out about her cheating too after you gave him the hint & he broke up with her. He was more aggressive & cold these days & you noticed he kept his eyes on you. You felt he was still upset with you being the one to break the news to him. . Now you were lying in your bed after breaking up with that cheater bf of yours after his betrayal. You think how he would be attending the Valentine's party with cheater gf while you were without a date, when you hear knock. You open door to find Bakugo standing there glaring at you. He didn't wait for your reaction & pushed you into room & closed door behind him locking it. . You were stunned & nervous with him in your room but saw same look of revenge in his eyes as yours. He speaks staring you down his husky voice. Bakugo: "Those cheaters have a nerve getting together after what happened. You gonna be my Valentine."