Credit: Norman Jean Roy

Robert Pattinson poses with a sexy naked woman in the March issue of Details.

But he didn't like it one bit.

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"I really hate vaginas," the Twilight star, 23, laments to the mag, on stands Feb. 23.

"I'm allergic to vaginas," he continues. "But I can't say I had no idea, because it was a 12-hour shoot, so kind of get the picture that these women are going to stay naked after, like, five or six hours... Thank God I was hungover."

Pattinson also dashes reports that he's romantically involved with Kristen Stewart -- or any other woman in Hollywood, for that matter.

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"The only emotional connection of relevance is with my dog," he says. "My relationship with my dog, it's ridiculous."

Pattinson next stars in romantic drama Remember Me (out March 12), but he would rather write political speeches, he says.

"You’d have two or three minutes to affect someone. Make them hear you... I quite enjoyed doing the press for Twilight because there was a similarity," he says. "But you’d better have something to say. I felt a responsibility to be fascinating."