Here’s a real Gettier question from my actual life: In college, my future ex-wife rented a video from the video store called “Kama Sutra” on my card and return

Here’s a real Gettier question from my actual life: In college, my future ex-wife rented a video from the video store called “Kama Sutra” on my card and returned it late. The late fee was sent to my parents’ house. My dad discreetly told me later that it was not a problem that we got a late fee, which means he read the letter and thinks we had watched a porno together and was trying to let me know and be cool about it. However, https://en.wikipedia.org/wiki/Kama_Sutra:_A_Tale_of_Love https://en.wikipedia.org/wiki/Kama_Sutra:_A_Tale_of_Love is a “historical erotic romance film” and not a porno. But my ex-wife and I did in fact see a different porno together. So then, does my dad know that we saw a porno together?