We sometimes make shoots of our female models having sex with her real-life boyfriend  (but we never make shoots of female models with some "stud" dude). It's our preference that female models appears in a solo shoot first, but that's not a requirement.
We have a bunch of info for real-life male-female couples applying over on our Fuck Like You're Being Filmed  site, so check that out to apply together.
Because most of our shoots are with solo female models, our application and screening process is geared towards that, so there may be some questions that are not relevant to you applying for a girl-boy shoot. It's fine to just answer whatever to those questions, if you're only interested in doing a shoot together.