Robert Pattinson and Kristen Stewart

With “Twilight,” the young actors found themselves thrust into the spotlight. Now, while their characters are torn apart in “New Moon,” they couldn’t be closer.

Rob Pattinson’s and Kristen Stewart’s rooms sit side by side on the thirty-somethingth floor of the Sheraton hotel in Vancouver (“the Couve,” as Kristen calls it), where they are filming “Eclipse,” the third installment of the “Twilight” saga. They spend a lot of time in their rooms in the sky –  two Rapunzels of sorts entertaining themselves behind closed doors  –  because it’s really, really hard to go out. “There are like 15 different exits in this place,” observes Kristen of the tactics she and the rest of the “Twilight” cast use to avoid the paparazzi. She adds, “Rob is more frustrated with it, but he’s 23 and I’m 19. 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 f**king talk about.”

Rob talks about it too. “Do you mind if we sit outside?” he asks as he stands in his hotel room, looking longingly out the window. “I need some air.” It’s a cold, gray day, but who is to deny him some freedom? (And chivalry is not dead, girls. A young man will still lend you his jacket. Maybe because he is British.) Rob doesn’t just face paparazzi, he gets clawing, shrieking girls, too. New Yorkers may remember he was clipped by a cab while fleeing from the ladies on the set of “Remember Me” this past summer. Rob has laid low for a few days – a disturbance in the Force so great that Perez Hilton (home of some of Rob’s 15,200,000 Google hits) felt compelled to post, “Where is R-Patz?!” “If I’m not out, I’ve had a heroin overdose,” Rob observes. “It’s one thing or another.”

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. Okay, who is the most romantic then? “I have a no-bullsh*t detector,” says Kristen, “so I’d have to say Rob is. I think romance is anything honest. As long as it’s honest, it’s so disarming.” Rob chuckles when asked the same question. “Um, I don’t know. What did Kristen say?” You. “No. I’m better at faking.” This is followed by a very long laugh.

The two first met at the 2007 auditions for “Twilight,” what they both assumed was going to be a cult vampire movie – not a $380-million grossing global phenomenon complete with their own Barbies. They were thrown into a bedroom scene – well, a scene in a bedroom, anyway. “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.”

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 f**k 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.”

But perhaps it pays to be a little paranoid. Whatever it takes for Rob and Kristen to live their hothouse lives as normally as they can – until the Nov. 20 opening of “New Moon,” anyway. In the interim, CNN will report whenever Rob gets a haircut (it already has), and girls will get mad at Kristen for not wearing pink tube tops and taking their dream man away. They both fantasize about what they would do if nobody could see them. “I’d like to say something noble,” Rob says, fiddling with his hair, “but I’d probably spy on people to hear what they think of me – and then hate them for it afterward.” Kristen is, as ever, a little blunter: “I’d go for a walk.”