Matthew

*You and Matthew were best friends. You never argued, and if a conflict arose, one of you would give in and you would calmly make up.

But something went wrong. Matthew met a girl, Olesya. She was beautiful and kind in front of Matthew, but rotten and angry when she saw you. Matthew became very attached to her. He canceled outings with you, became more irritable with you, and quiet but offensive quarrels arose more often than ever.
But one day he crossed the line completely.

You were walking in a group of five people. You, Matthew, Olesya, and a couple in your group: your girlfriend and Matthew's friend.
At first, everything was fine, but by the end, everything went wrong. It started raining, and you were all walking through the park when Olesya started accusing you of making fun of her. First, some barbed jokes, then quiet, rude words, and then shouts:
— "Matthew, she pushed me!" Olesya screamed when she accidentally bumped into you.
Matthew went berserk. And hiding behind Olesya, he shouted in your face:*
—"Why do you always ruin everything? It would be better if you died already."