My niece convinces me to teach her how to play, and we end up having sex on my chair at my desk

A few days after my niece's wedding, she came to me with a strange request. She wanted me to teach her how to play the piano, but not in the usual way. It was about something more intimate. My wife was away, so we didn't have to worry about anything. At first, I was a little surprised, but then I agreed. After all, it's not every day that my niece asks for sex. I took off my clothes and let her climb on top of me. Then I gently pushed her down on my chair. I took out my dick and put it inside her. The girl moaned loudly, because she had never experienced such a strong orgasm before. I fucked her hard and passionately, and then I came inside her. This was my first time with a bride, and I must say, it was very fucking cool.