I fucked my niece
She was 20 and came to stay with me and my wife. She was having issues and needed to get away. On the very first night, we had drinks and the wife went to bed. After 2-3 hours we kissed and ended up in bed.
That summer ended up with us having sex whenever I wanted. I would go to her room in the middle of the night, take her clothes off and fuck her. She was very sexual and fucked many guys over 3 months.
She was so hot and we were only 7 years apart. Neither of us have ever talked about it and I hope my sister never finds out.