Tom Leykis knows all.
www.blowmeuptom.com
Although...I DO happen to have ONE male friend that doesn't want in my pants. I know. I asked him. He turned me down.
But to this day, he and I are the best friends in the world. He comes to me for chick advice from a chick's perspective.
As Tom says, there are inevitably exceptions to every rule. But not many of them.