Now you need some good ideas on why the people are fucking. It's not that people don't watch scenes where couples are straight at it, but there's so much of that they can see for free.
Building a scene the viewer can believe in and think it was him is very important. But don't fall into the trap of the pizza delivery boy gets fucked instead of paid.
The scenes where a girl fucks a guy instead of paying him was old and tired in the 1990s today it should be put to rest. So here's a few ideas.
Lottery Winner.
Girls decide to fuck a lottery winner to make him their sugar daddy. At the end he can tell them he won all of $50 as a nice twist.
Fake casting.
You're looking for new faces for a reality show a sexier version of
Love Island.
Fake casting.
For fashion models or actresses, bring on the casting couch.
Market research.
Testing the effectiveness of sex toys.
The hotel cleaner.
Offering a hotel cleaner $100 for sex.
There are lots more ideas that can be used to fit most niches and styles all you have to do is make the viewer think it could happen to him. Don't pick one idea and make a site dedicated to only that, mix it up a little. There are loads of ideas, all you need is an imagination.
And don't just use one girl, have girls watching who don't fuck but are happy to appear for a small fee.