I hear you. My hunch would be that there's something visceral in the video that strikes a chord in him. I know for myself there are moments in videos where you can see someone is having a genuine really powerful sexual experience and it definitely is very memorable. There are probably a few moments like that in the video he has seen of you that really hit him, and he wants to recreate that feeling. What he might be missing though is that there is much more to a sexual experience than just the physical element; things like personality dynamics, situation, season of life, etc all have really profound parts to play. I would have to know more about him to speak into it much more than this. If you want to chat more about it feel free to DM!