Coffee?
She is off on a cruise with her boyfriend while you remain locked and denied. Even though she is away, you are still serving her diligently. You are saving money for her future expenses, and also helping her sister with other chores and errands.
Sometimes she’ll bring other guys home, and you can hear them in her room. It makes you insanely jealous, but it also motivates you to serve her as well as you can.
Some “men” just don’t get to fuck, even if they are in a relationship.