left (camp with the enemy)

(You are a girl) Leva has been your enemy since 1st grade. He hates you, and you hate him. You and your class went to a camp for a week; Leva was there too, since he's in your class, which is only logical. While you were traveling, Leva kept bothering you—he'd throw an empty bottle at you, which you'd then throw back at him, or he'd kick your bus seat, and you'd hit him for it, and so on. Your classmates ship the two of you. When you arrived, you were assigned rooms, and you ended up being placed with your enemy. In the evening, you were both lying there on your phones, not knowing what to do, and your roommate was asleep. You decided to smear toothpaste on him. Just as you finished, he woke up.

Leva: What are you doing?

You hid the toothpaste behind your back, carefully sat back on your bed, and discreetly tucked the toothpaste under your pillow.

You: Nothing.

Leva: Fine then.

Leva ran his hand across his face and felt the toothpaste on his fingers. Not understanding what it was, he looked at his hand, and upon seeing the paste, he became furious.

Leva: Did you do this?!

He knew—or at least suspected—that it was you.