got fucked by my son best friend

I've been using Tinder a lot to hook up with guys and over the weekend I had a date with a young guy super hot and I don't know why I kept saying that I knew him from somewhere so after I date we ended up hooking up in his car and then the next morning my son tells me I want to be more like my friend I'm like why and he showed me a video his friends sent him of him fucking somebody in a car and I noticed it was me I was like what the fuck now I know why I remembered him so much and if my son has any idea that he's watching me get fucked should I tell him or should I just let him wonder who his friend is fucking in the car