Though they've garnered a reputation for being sex-obsessed (when they aren't trying to get it, they're talking about trying to get it), guys can be surprisingly guarded about certain sexual issues. 'Men are usually comfortable talking about sex in broad strokes,' says Cynthia W Gentry, author of What Men Really Want in Bed
(Quiver). 'But many have a very hard time communicating the nuances of their concerns or desires because they're embarrassed or afraid of how you might react.'
But since information is power, we set out to bring you the sexual secrets all guys keep from their girls by asking experts to identify the stuff he's been hiding. Hope you're sitting down.