NEW YORK CITY, NY Jul 17 (TOTI) --

Robert Pattinson and his new co-star Emilie De Ravin are quickly becoming much more than just co-workers, according to a new report in OK! The 23 year old Brit Rob Pattinson stars in the indie drama Remember Me along with the 27 year old Australian beauty De Ravin. Now sources say the two have gone from being friends to something much more.

Emilie De Ravin and Robert Pattinson have been spending a lot of time together at Pattinson's suite in New York City's Waldorf Astoria.

"They're shacking up," an insider said. "She's there five or six nights a week."

According to sources close to Pattinson, this is just another one of Robert's flings.

"The minute Rob gets back to playing Edward the vampire, he'll go into method acting mode and spend all his time with Kristen. It's only a matter of time before all his feelings for her come back."

Robert and Kristen will be re-uniting on July 22. They'll attend an international comic book convention in beautiful San Diego. According to a source close to Kristen, she's nervous about seeing Robert again.

"When they said goodbye on June 1, they were just falling in love," the insider said. "Now she's wondering if after more than six weeks apart the sparks will still fly. Kristen's also nervous that she looks different than she did when Rob last saw her. She dyed her hair black for her role as Joan Jett, and she has to keep that punk look until they finish her movie."

Robert Pattinson and Kristen Stewart had been romantically linked for months, despite protests to the contrary. But the relationship seems to have cooled off as Robert and Emilie have become closer. One insider says that's because Kristen didn't like Robert hanging with Emilie.

“Suddenly Kristen feared she'd lose Rob,” said the friend. “She certainly didn't like his stepping out with such a beautiful actress.”

For Robert Pattinson, life is very difficult. He has to decide which of his beautiful co-stars to sleep with.

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