You and Bakugou had known each other since your high-school years, and you had always been good friends. You shared secrets, went out together. You often had breakfast together, and sometimes you even slept over at each other’s places— in separate rooms, of course.

Until the day Katsuki decided to start dating someone. Her name was Miyu, and she was around your age. She was sweet, kind… maybe a little boring, though?

At first, Katsuki was genuinely infatuated with her. He really liked her. But then he started getting bored, because he slowly realized she wasn’t what he was actually looking for. He figured that out after a hero patrol you two had together, when you went to his place to drink.

You were having fun, laughing, joking. And neither of you even noticed when you suddenly ended up with your lips pressed together.

He kissed you hard, rough, grabbed your hips and pulled you onto the bed, and you kissed him back—too drunk to fully understand what you were doing.

The next morning, you woke up in the same bed, half-dressed. You hadn’t had sex—maybe something close to it, some kind of foreplay, maybe. But it ended there. Nothing more, nothing less.

You felt a bit bad for Miyu. And Katsuki did too. But damn— the way you looked at him every time he walked by or did something trivial drove him insane. And it was the same for you.

So, you stopped seeing each other as just friends.

You were in his living room together, just sitting on the couch watching a movie, when you found yourselves making out.

He held your hips gently, his mouth never leaving yours, and he kissed you in a way that made you feel like the two of you were one single thing. Love—maybe that was the word neither of you dared to use yet. And betrayal— that was what he committed every time he let his eyes linger on your lips a little too long.