Just how close are “Twilight” co-stars Robert Pattinson and Kristen Stewart? With the second installment of the “Twilight” series, “New Moon,” set for release on November 20, Harper’s Bazaar sat down with this dynamic duo for a stunning photoshoot and to discuss their relationship, fame and of course, “Twilight.”

With the release of “Twilight,” these two young actors found themselves thrust into the spotlight. While filming “Eclipse,” the third installment in the “Twilight” saga, Rob and Kristen spent a lot of time in their rooms in the sky because it’s really hard for them to go out. “Rob is more frustrated with it, but he’s 23 and I’m 19,” Stewart said. “He had a couple more years to be an adult and to be independent, whereas just as I was getting to the age when it’s normal to go out by yourself …” She pauses. “But it’s boring because this is all I fucking talk about.”

At the moment, there is only one thing anyone cares about regarding these two, who, as “Twilight’s” Bella and Edward, manifest all of our vampiric romance fetishes: Are they dating or what? Well … it’s clear that Rob and Kristen are close — very close. “She’s a unique girl,” says Rob simply. “You really don’t meet many people like Kristen.” The two first met at the 2007 auditions for “Twilight,” what they both assumed was going to be a cult vampire movie and not a $380-million-grossing global phenomenon.

They were immediately thrown into a bedroom scene. “It wasn’t like we had to lie down together,” Kristen says, “but we were very reactive. We had a very responsive, palpable thing.” Robert notoriously took half a Valium beforehand. “I was calm and collected, and then we do this thing where we’re pretty much making out. I’ve since tried to do it at another audition, but it completely just collapsed.” He adds, “Kristen was very different from how I expected the girl who played Bella would be. I was kind of intimidated.”

Rob goes on to gush about his co-star saying, “I don’t really know how to act. I’m kind of guessing everything. … Even though I can conceptualize stuff, she can actually do it. I can make something so complex and then be like, That was pout 27.”

In the corner of Rob’s hotel room sits a stack of boxes alongside a couple of guitars and a box of Ray-Bans. “Most of it is my dirty washing from New York,” he says shamefacedly. “I didn’t do any washing the whole time I was there. I just put it in boxes and shipped them up here.” When his clean laundry runs out, he steals socks and underwear from sets. I find a suspicious lump in his jacket pocket, which turns out to be a pair of black socks. “Oh, God!” he says, bursting out in laughter. “See? I’m a klepto.”

Who spends more time on their hair?

Kristen: “Rob.”

Rob: “I have weird personal-space issues, and so I can’t stand people — um, I’ll do anything to not have any touch-ups.”

Competitive?

Kristen: “Rob. In a very childish way, in every aspect of his life. He’ll literally start talking in a different voice if he’s won something. He sounds like a five-year-old.”

Rob: “I’d say it was even. She said me? Really? When I really win things, it’s just like…” [Kristen is correct: He makes a noise like a five-year-old.]

Athletic?

Kristen: “I’m definitely claiming that one. Rob can barely jump rope. I call him Flippy because when he does his stunt rehearsals, he flips around [makes a gesture like a penguin]. And, God, when he tries to run …”

Rob: “Kristen. You notice it in the film; she looks so much more athletic than I do. And I’m supposed to be the superhero.”

Egotistical?

Kristen: “I’d have to say him. I hope he says him too actually. Like every time he looks in the mirror and he twists his hair. Actually, he could give a fuck about his hair. I hope that sarcasm translates.”

Rob: “It’s kind of a tie. We’re both pretty proud people. Her ego is more solid than mine, but mine has soared to such peaks, it’s ridiculous. Mine’s more erratic, but it can get to a point when it’s, like, godlike. Only in my eyes, of course. Sometimes just when I say hello the right way, I’m like, Whoa, I’m so cool.”

Who Googles themselves more?

Kristen: “Rob.”

Rob: “She would say me, but I reckon it’s her. If either one of us catches the other one doing it, we’re like, Jesus Christ, is that what you’re looking at? And the other one’s on their phone pretending to text. I look up my competition more than she does. I’m incredibly shallow. I think she just looks at herself.”

Who’s the better musician?

Kristen: “Rob. He’s a great singer. Heartbreaking.”

The most outgoing?

Rob: “I was once, but not so much anymore. Kristen’s a little more open now.”

Better sport?

Kristen: “Who can hang? Definitely me. He’s very sensitive. He’s got a fragile ego.”

Superstitious?

Kristen: “Rob. He’s a little bit more paranoid, so that feeds into superstition more.”

Rob: “I am. I believe a lot in karma and stuff. Like when I end up with egg on my face, I’m like, Fate! I was born doomed. But I think it’s more being an idiot than superstitious.”