There was no way this would happen. Her younger sister Lena came to visit the house where I lived with her. The next day she went on a business trip for three days, and very soon she came back and she said. I'm lonely so I'm with you. It was very hot that day and we were sweating, but our sexual desire was unusually strong. I couldn't stand it anymore, and finally I made a mistake with her, a forbidden physical relationship began from morning to night, as if swallowed by her desire.