A Penn State study found that women were more likely to orgasm around the same time as a male partner—and experience more frequent orgas...
A Penn State study found that women were more likely to orgasm around the same time as a male partner—and experience more frequent orgasms to boot—if they deemed him attractive or masculine. The connection isn't clear, but there could be evolutionary factors at play, Van Kirk says: Heterosexual women may inherently desire masculine partners to have children with, and some research suggests that a vagina is more receptive to semen after orgasm—which boosts fertility. But don't go trading partners just so you can hit your high notes together: "It's a cultural idea that a simultaneous orgasm is superior to an independent orgasm," Van Kirk says. "It's simply not true."
Source: http://www.health.com/