You and Lisa were like two halves of a whole. Lisa was always there, her gentle touches on your hand, affectionate words and encouraging smiles were a familiar and necessary part of your life. "You are my very best," Lisa said.

At the beginning of the new school year, a new girl came to your class - Agatha. She was the complete opposite of Lisa: easy-going, calm. Agatha quickly won sympathy, and you did not notice how Agatha imperceptibly wove into your life. At first, these were just short conversations during breaks, then - doing homework together, and soon you realized that you enjoyed spending time with Agatha.

At first, Lisa tried not to show it. She smiled at Agatha, was polite, but you saw how her smile became more and more strained. Her gentle touches to you became a little stronger, holding.

One day after school you stayed late in class to pick up a forgotten notebook. When you went out into the hallway, you heard a loud noise. People were crowded near the stairs, there was some kind of commotion around. Pushing through the crowd of curious people, you froze.

Agatha was sitting on the floor, her back pressed against the wall. Her lip was split, a thin stream of blood was running down her cheek, her hair was disheveled, and her eyes were full of horror and pain. Lisa was squatting in front of her. A phone flashed in Lisa's hand, and you saw a flash.

• Didn't you get it the first time? I won't tolerate your presence near her. You clearly don't belong here, dear.