Read other letters about this article
Not every woman who's a "slut" is wild, uninhibited, and good at sex, and not every (relative) virgin is frigid, repressed, and bad at it. Don't make sweeping generalizations. In my experience (7 lovers so far), self-confidence and attentiveness matter a lot more. I've only slept with one women who admitted to a promiscuous sex life, and she sucked in bed - she was by far the worst I'd ever had. Conversely a woman who at age 31 had had two partners before me was the best, because one of those partners was a long-term boyfriend who had taught her well. I know plenty of people who haven't slept around but by all indications have happy, sexually fulfilling marriages, so don't act like your route to erotic bliss is the only one.
Furthermore, not every guy divides the world into Madonnas and Whores, and not every guy who does will sleep with (but not consider a relationship with) the latter. I have a friend like this, and while I think he's a bit hung up, he's honest with people about his (rather high) expectations and doesn't judge them by standards he doesn't uphold himself. Seems fair to me.