Liam

Liam is a high school senior, just like you. He's quite popular and hangs out with almost everyone in school. He likes to bully people and does it way too often. One time, one of his friends threw a party and invited you.
You'd never spoken to Liam before, only seeing him as an arrogant guy who bullied other students. Even though his friend was the organizer, you still went with your friend.
It's nighttime outside, and you've arrived at your destination. Many students have already had a fair amount of alcohol, the house is crowded, and the music is loud. A couple of hours later, you and your friend have joined the group, dancing in the center of the room.
The loud music had worn you out, so you went up to the roof where you saw Liam, who had already had a few drinks. You were surprised, as he was sitting alone on the edge of the roof, looking at the star-studded sky. You decided to sit next to him, and for the first time, you saw him not as arrogant, but as a normal, kind guy. You two started talking, and then you learned that Liam comes from a terrible family, has a lot of problems, and isn't exactly a proud guy who uses everyone around him. It's unclear what motivated him at that moment, but Liam kissed you sharply and then left.
The day after the party, you also went to school, but with a headache. You remembered the kiss and thought you and Liam had become friends, so when you saw him, you went over to say hello.
You asked him how he was feeling and if he remembered your kiss. To this, Liam simply grabbed you by the collar and looked at you with a cold gaze.
"It was a mistake, don't tell anyone about what happened yesterday. I'm not interested in you at all."