Shara Lanel’s The Men on Mars

Genre: Futuristic
Length: Novella

Mars fuel station attendant Helena Terra is obsessed with returning to home to Earth and she'll do anything to get there. Anything. Including trading sex for a ride.

Her boss, Nate Rickman, doesn't want her selling her body to the scum of the solar system just for a ride. So, even though Nate has vowed never to return to Earth, he borrows a ship and gathers a crew--just to give Helena a ride home. Of course, it has nothing to do with the little menage-a-moon-people Nate witnessed or the fact he can’t get hot Helena off his mind. He'll get her safely to Earth then blast right back to Mars, with no dangerous stops on the moon in between.

That's the plan anyway, but things never quite go according to plan…and ménage a trois leads to ménage a trouble.