Kristen Stewart broke down in tears and called her boyfriend and Breaking Dawn co-star Robert Pattinson after she saw pictures or Rob exiting La Poubelle in LA with blonde Sarah Roemer on Dec. 4, a friend tells In Touch magazine. “Kristen flipped out.” But even after R-Patz tried to tell K-Stew that “it was just a bunch of friends having drinks together,” she decided to get revenge and make him jealous by flirting with a friend of his.

Kristen called Rob’s good pal Marcus Foster, who did two different songs for the Twilight soundtrack, to get back at Rob.

“Rob doesn’t like how close Kristen is with Marcus,” says the friend. “Rob asked her to stop calling him so much, but she refuses.”

Rob is very close with Marcus, but he doesn’t like that Marcus calls Kristen his “muse” or that she has been “leaning on [him] a lot lately,” explains the friend.

“Rob and Marcus are good friends, and Kristen is playing off of that to make Rob jealous,” reveals the friend. “She likes having someone to make Rob jealous and remind him that other guys find her attractive.”

K-Stew pulled a typical jealous girlfriend move, but BFFs, do you think she should have tried to get revenge on Rob at all? Was her stunt out of line?

More R-Patz & K-Stew News:

1. Rob Reveals Why He Would Have Rather Played Jacob
2. Kristen Lands In LA
3. Rob’s Designing A Ring For K-Stew

It was hard for Kristen Stewart to hear about Robert Pattinson being out in the company of another young beautiful woman and to even see photos of it, while she was hard at work filming Snow White and The Huntsman, claims an insider to OK! magazine.

Even though the dinner at the bistro, La Poubelle in LA, was focused on business, Rob was still desperately worried that Kristen would dump him.

“Rob’s in a total panic at the thought of losing Kristen,” the insider reveals. “He’s desperate to keep her and is virtually grovelling on bent knee.”

The truth is that Rob “adores Kristen,” a friend of Kristen’s tells OK! “He wakes up thinking of her and would do anything for her.”

Hopefully now that Kristen is back in LA, she and Rob will make up , Kristen will have no more worries and the pair will have another super romantic  Christmas holiday.

-Nicole Karlis

For More Robert Pattinson and Kristen Stewart Stories

1. The Truth Behind Robert Pattinson’s Night Out With Sarah Roemer
2. Robert Pattinson’s Night Out With Sarah Roemer: ‘No Hanky Panky’
3. Robert Pattinson & Kristen Stewart: 8 Reasons They’re Like Edward & Bella

Much fuss has been made about Robert Pattinson and Sarah Roemer ever since photos surfaced of the pair exiting Los Angeles restaurant La Poubelle on Dec. 3 — but HollywoodLife.com has exclusive new details that confirm Kristen Stewart has nothing to worry about! Not only did Rob “not look like he was on a date,” but there was “no hanky panky” whatsoever.

In fact, the whole night sounded downright professional.

“Rob Pattinson and his friends were having a business meeting,” reveals our source, who witnessed the entire evening firsthand. “Before it got crowded, the four of them were sitting at a table discussing a movie project. There were two men and one young blonde girl [Sarah Roemer.] They all arrived together and sat at a corner table towards the back. [Rob] sat next to one of the men and the other man and young lady sat across from them.”

Our eyewitness says this was not Rob’s first time at La Poubelle. “He can enjoy himself” there because it’s “low-key,” and like every other time our source has seen him there, he was “the perfect gentleman.”

Phew! Fans of Rob and Kristen can breathe a huge sigh of relief.

Of course, this does make us curious about one thing: If this was a business meeting, what big new project could Rob have in the works?

— Reporting by Sandra Clark

Robert Pattinson is such a good boyfriend! While his girlfriend Kristen Stewart is finishing up her final few days on the Snow White and the Huntsman set in London, Rob hit up the trendy La Poubelle bar in Los Feliz with 27-year-old actress Sarah Roemer!

You might remember Sarah, from her starring role alongside Shia LaBeouf in 2007′s Disturbia. But what’s even more interesting is that the San Diego native worked with Kristen in  2007 short film Cutlass directed by Kate Hudson.

After this pic [above] was taken, the Daily Mail reports that Rob and Sarah hit up Rob’s favorite spot Soho House in West Hollywood before allegedly leaving together in Sarah’s car.

While many are calling Sarah the “mystery girl” and Rob’s “new girl” it’s nice that we are able to tell you they’re just friends!

— Chloe Melas

More Kristen Stewart News

1. Robert Pattinson Says: ‘Breaking Dawn’ Is Just Like ‘Teen Mom’
2. ‘Breaking Dawn’ Wedding: Costume Designer Reveals New Details About Edward’s Tuxedo
3. New ‘Breaking Dawn’ Stills — Edward Rubs Bella’s Baby Bump