If that's the case, I'll admit it's pretty hard to find.
It's pretty hard for any site these days (especially the big ones) to stop fake profiles and scammers from signing up, but I think I get what you're after.
My preferences would be Club Intimate, Fling, Adult Match Doctor, and Get It On, As for adult dating sites that I don't recommend, see my reviews for Shag Pal and Adult Friend Finder.
Free Safe Porn is a very useful secure porn resource list.
This is a smart way to find safe, no viruses, no malware, porn websites.
Big porn site list including the most famous and the most up to date porn sites for the year 2018.
This adult website selection has been created with the goal to keep collected all the world-known adult websites.
Always be wary of the signs of an internet dating scam.