This looks like an interesting book: The Accidental Billionaires: The Founding of Facebook. Not so much the sex part that seems a part of the story, but the founding of Facebook part. It’s out in mid-July 2009.
Here’s a description:
“Eduardo Saverin and Mark Zuckerberg were Harvard undergraduates and best friends–outsiders at a school filled with polished prep-school grads and long-time legacies. They shared both academic brilliance in math and a geeky awkwardness with women.
[O]ne lonely night, Mark hacked into the university’s computer system, creating a ratable database of all the female students on campus–and subsequently crashing the university’s servers and nearly getting himself kicked out of school. In that moment, in his Harvard dorm room, the framework for Facebook was born.
What followed–a real-life adventure filled with slick venture capitalists, stunning women, and six-foot-five-inch identical-twin Olympic rowers–makes for one of the most entertaining and compelling books of the year. Before long, Eduardo’s and Mark’s different ideas about Facebook created in their relationship faint cracks, which soon spiraled into out-and-out warfare. The collegiate exuberance that marked their collaboration fell prey to the adult world of lawyers and money. The great irony is that while Facebook succeeded by bringing people together, its very success tore two best friends apart.”
The author, Ben Mezrich, has published a number of this type of book–readable, engrossing story, unpolished prose:
“Ben Mezrich, a Harvard graduate, has published ten books, including the New York Times bestseller Bringing Down the House. He is a columnist for Boston Common and a contributor for Flush magazine. Ben lives in Boston with his wife, Tonya.”