My son's girlfriend has a great ass and she's also a slut

She told me to take some erotic photos of her and of course I did, she's my son's girlfriend and I'm a photographer so I was delighted of course, but it's also true that when I saw what she was wearing I thought that couldn't be, it put me a bit between a rock and a hard place because everything was visible, damn it, and the worst was yet to come, damn, we ended up fucking and she just kept asking for more cock!!