Kat/Josh
Only caveat is they never go public. Rules and all. The Frat library never leaves the house. I'm sure if you're in the proper mood, though, you could give the Frat boys a real thrill and let the pets please you on film.
If you were going to give her to him as a reward anyway, I do not see why that could not still happen. Only difference would be the camera for the rest of the Frat to enjoy it as well.