Someone video taping you while having sex

So a couple of weeks ago I had sex with someone I knew from high school for years and he has been asking me if he can video tape me while we were having sex but I’ve been telling him no so we had sex again and he secretly video taping me from behind and when I noticed tried to hide it so I didn’t mention it i was nervous and ashamed but now I’m so worried thinking about the what if’s of him exposing me I havent talked to him since they and ashamed to mention it to him or anyone looking for advice I know I’m stupid / dumb but looking for some comfort