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Hollywood's hottest duo, New Moon's Robert Pattinson and Kristen Stewart, grace the December cover of Harper's Bazaar and heat up the magazine's pages in a series of ultra-sexy photos.

While we're used to seeing Rob looking flawless – he does play a vampire afterall – it's a bit of a shock to see Kristen looking so un-Bella-like. Her Twilight character is messy, clumsy and awkardly human. But in these sizzling shots both stars look picture perfect – not to mention totally infatuated with each other.

If you can tear your eyes away from the photos and focus on the text, you'll find the interview reveals much about the costars' personalities. Kristen is blunt, sarcastic and curses like a sailor. Rob is charming, sweet and surprisingly self-deprecating. But, as usual, the tell-all is frustratingly devoid of details about their off-screen romance. Are they, or aren't they?

Gossip headlines would have you believe that these two are heading for the altar, but Rob insisted in Vanity Fair that they're just "good friends." Well, this time they neither confirmed nor denied, but they did gamely answer questions about their relationship – whatever that may be.

When asked who's more romantic, Kristen is sure it isn't her. "I have a no-bullshit detector, so I'd have to say Rob is," she says. "I think romance is anything honest. As long as it's honest, it's so disarming."

Rob's response? "Um, I don't know. What did Kristen say?" You. "No. I'm better at faking."

Check out the full interview when the issue hits stands on Nov. 17th – just in time to get you in the blood-sucking mood before the big premiere on the 20th!