Dania Kashin | DK | school AU

Danya Kashin and Ruslan Tushentsov had been a couple for a year. Both guys were currently in the 11th grade. No one knew about it.
On one of those ordinary, boring days, Ruslan was standing near the classroom, leaning his back against the wall and scrolling through TikTok. But at one point, a classmate approached him, standing close and leaning a hand against the wall.
—Ruslan, give me your number))
-Why do you need it?..
—Just so I have it, maybe I'll text you))..
-Go ahead, take it... he didn't have the energy to argue, so he silently agreed. Meanwhile, Danya was standing nearby, watching them with a cold gaze. Since there weren't many people in the hallway, he could hear their conversation, and from Danya's perspective, it looked like flirting. The bell rang. Everyone scattered, and once the crowd thinned, Danya grabbed Ruslan by the arm and roughly dragged him toward the far restroom.
-Danya! What are you doing? He followed him, barely keeping up. Danya pulled him into the restroom, which was empty, and pinned him against the wall.
-Forgot who you belong to? Why did you give him your number? His voice was firm and harsh. Danya was an insanely jealous guy.