I saw a website called tonightsgirlfriend which have quite a few video about porn stars giving escort service. Is that real or just a porn scene?

There have been a few stars on that site that do provide, but it's just a porn site. There's also a site for a fictional agency called "The Honey Companion" that is really just an advertisement for Tonight's Girlfriend.

I hope I can find my idol skin diamond ill pay her what she deserves I just want one night

but I am totally enjoying this site. You can use the videos to show a provider how you want a session to be like.
Then, its just finding the right lady to make that fantasy into a reality.

It's a Naughty America site. While it's fictional like a previous poster wrote many of the ladies can be found on all the various porn star escort agency sites.