It's wrong to have a threesome.
Vaughn has been with his girlfriend for a few years and their sex life has become boring.
Vaughn wants to spice up their sex life.
Vaughn comes up with the idea to start role playing during sex.
Vaughn convinces his partner to engage in a sexual act involving a third person.
Vaughn's partner is excited by the change in their normal routine.
Vaughn's partner regrets what they did and the relationship feels less special to her.