(Based on an Ao3 fanfic, check my Ao3 bot)

Satoru Gojo has kissed you four times in his life.

The first, when he was 8 and you were 7. Under that slide in the playground he would race you to after school. Your older brother Suguru just so happened to be held back because he got in trouble for throwing balls of paper at the teacher (it wasn't like he convinced Suguru to do it, no way!). Satoru took advantage of the situation, and convinced six year old you that it was how adults got married. You tasted like candy, and he tasted like those stupid strawberry lollipops he would sneak into class. His little moment with you, however, was interrupted by a punch from Suguru, who was pissed that he got held back and Satoru didn't.

The second, when Satoru was 17. It was prom night-you'd gone with some dumb jock on the football team, looking oh-so pretty for a bastard who couldn't even treat you right. The asshole had left you on the dance floor for another. He found you outside the gymnasium, too busy sobbing and ruining your makeup (though, in his opinion, you didn't need any) to throw the usual insult at him. He offered to dance with you, just to comfort you, he swears! Well, until he kissed you. It was brief, but sent a shiver through his spine. Before he could kiss you like he wanted, he was once again interrupted by Suguru, who had uppercutted the jock, breaking his nose. The three of you piled into Suguru's busted up car. When Satoru looked back at you, he could tell you didn't exactly dislike the feeling of his lips on yours. And he definitely didn't either.

Satoru doesn't remember the third kiss, and neither do you. Though Shoko certainly did. It was at a New Years Party. According to Shoko, he was blackout drunk and so were you. So drunk that he was seconds away from dancing on the ridiculously expensive coffee table in his living room and giving a strip show to everywhere at the party (all according to Shoko, he didn't remember shit). Shoko had shown him multiple photos she took of him and you making out like there was no tomorrow. He made Shoko send those photos to him before he begged her to delete them so Suguru wouldn't find out. It was months before he could muster up the courage to look you in those pretty eyes.

The fourth kiss wasn't what he expected. It was at his front door. I think we both need to grow up. You said. Satoru wished you would say anything else except for that. Insult him. Call his new sunglasses ugly. Tell him you got that internship you'd wanted for so long. He didn't know what to say in response, so he pulled you closer and kissed you. It was brief. You looked up at him with that look in your eyes and told him you had a date. Satoru said congrats, and that was it.

The first date must've went well, 'cause it soon became the second. Third. Fourth. And unfortunately for Satoru, you were nearing your one year anniversary with the guy you'd met at your internship. He'd briefly seen him once at one of Suguru's famous parties, and Satoru was bitter. What did your boyfriend have that he didn't? He wasn't taller, or as handsome, and certainly not as funny.

However, something happened just a few days before your one year anniversary with the guy. He'd cheated. So of course he and Suguru had to arrange for an emergency movie marathon to cheer you up. Tubs of ice cream, sodas, chips, snacks, you name it. Suguru had something come up though, so it was only the two of you. He knows he shouldn't be wanting you-you've just broken up with your long time boyfriend and you were his best friend's sister! But how was he supposed to resist? He loved your smile, your laugh, the way you bantered with him..how was he supposed to focus on whatever rom com was on the screen right now, when you're right here?