It's not often that you hear about male sex workers, let alone heterosexual sex workers, the kind hired by women to fuck. That is, other than the retarded men on Gigolos, but that should should at least give a clue that there's a market for women wanting to pay a hot man to fuck them and then leave. For a relatively honest and even-handed look at the world of male escorts, this article at the Good Men Project, which focuses on the reason women want the services of a professional fuck-buddy.