Is Emma Watson trying to steal Robert Pattinson from Kristen Stewart's clutches? Fans of Kristen Stewart-Robert Pattinson romance may now take a sigh of relief as Emma Watson has nothing but a professional relationship with Pattinson.

Robert Pattinson has recently signed to star in Dark Arc, opposite Harry Potter star Emma Watson. But this reportedly is making Kristen Stewart wary about Pattinson working with his former co-star in Goblet of Fire.

Allie is Wired reports that in Kristen's mind Watson poses a threat in the Hollywood couple's relationship.

"Like all girls, Kristen can be very jealous and possessive, and in her mind Emma poses a threat. Rob has commented before on how cute he thinks Emma is and Kristen worries that he would have more in common with her because she's British," said a source quoted by the Web site.

But more than anything, Kristen's seemingly unamiable relationship with Emma reportedly takes root with Watson's previous comments, where she dished the Twilight Saga for selling sex, as opposed to the Harry Potter franchise. Kristen apparently took this personally.