When Sonja asked her husband whether he wanted mushrooms, her friend Kaja answered for him: "Not at night. They upset his stomach." Everyone at the table continued talking. Sonja remained with her spoon in the air. In recent months, Armin had eaten away from home almost every evening, supposedly after training. He had never told her mushrooms upset him. She looked at Kaja and saw that she had lowered her glass before taking a sip.

It was Sonja's forty-first birthday. Kaja had brought the cake and arrived early to help, as she did every year. She knew where the candles were, which music Sonja liked, and how much Armin's distance had hurt her. She had listened to Sonja's doubts and said marriages went through dry periods. Sonja now recognized how easily somebody else's secret could hide inside advice that sounded reasonable.

She didn't interrupt dinner. After the last guest left, she asked Kaja to stay. Armin began collecting plates, but Sonja told him to sit. She asked how long it had been going on. She didn't present her suspicions one by one. Kaja began crying. Armin said it wasn't what it looked like, then fell silent when Kaja said, "Since February." It was enough for the date to stand between them like a fourth person.

Sonja first asked Kaja to leave. Her friend wanted to explain how lonely she had felt, but Sonja couldn't be both the injured woman and her comfort that night. She told Armin to sleep at his brother's. She remained with a cake from which exactly half had been cut. She removed the candles, put it in the refrigerator, and called her sister. She couldn't tell the whole story before crying.

In the following days, people proposed a meeting of everyone involved, as though this were a misunderstanding about an appointment. Sonja refused. She spoke with Armin about separation, finances, and their adult son, who shouldn't become a mediator. She sent Kaja a single message: she wanted no contact until she requested it herself. She didn't need to decide whether she would ever forgive her to know what she needed that morning.

She celebrated her next birthday in a small restaurant with her sister and three friends. Armin sent a polite greeting; Kaja sent nothing, respecting her last request. The waiter asked whether she wanted mushrooms with her main course. Sonja requested an extra portion. Conversation continued at the table while she chose dessert. Nobody answered for her, and only then did she notice how much she enjoyed that ordinary freedom.