A couple of months ago, I stayed to sleep at my partner's house and since his teenage daughter was not there, we went to the master bedroom to have sex. At dawn and after several wines, my partner goes to the bathroom and I take the opportunity to put a camera and record how we had sex. She comes out of the bathroom in her underwear and I tell her to suck it, after a while we start doing it. The camera was pointing towards the door that was between open. In the morning, at breakfast, the daughter comes down to the kitchen in her underwear, when I saw her, I pretended to be distracted from her, while her mother told her that she should sit at the table.
When I got home and saw what I had recorded, I was surprised that the daughter was watching us and got so hot that she took off her clothes and began to play.
I don't know what warmed me up more, if seeing how she fucked my partner, or seeing how the daughter masturbated.