Robert Pattinson & Kristen Stewart

Robert Pattinson and Kristen Stewart attend the U.K. premiere of "The Twilight Saga: Breaking Dawn - Part 1" at Westfield Stratford City on Nov. 16, 2011, in London. The two were a couple for years until summer of 2012 when Stewart admitted having an affair with a married movie director.

This photo shows Kristen Stewart and Robert Pattinson in a scene from "The Twilight Saga: Breaking Dawn."

148242288.jpg_2.jpg — Kevin Winter/Getty Images)

Actors Robert Pattinson and Kristen Stewart speak at "The Twilight Saga: Breaking Dawn Part 2" Panel during Comic-Con International 2012 at San Diego Convention Center on July 12, 2012 in San Diego, Calif.

"Twilight: Breaking Dawn Pt. 1" Hollywood premiere — Jason Merritt

Robert Pattinson and Kristen Stewart were on the black carpet for the star-studded Hollywood movie premiere of "The Twilight Saga" series, "Breaking Dawn: Part 1."

Actors Kristen Stewart and Robert Pattinson arrive at the premiere of Summit Entertainment's "The Twilight Saga: Eclipse" during the 2010 Los Angeles Film Festival at Nokia Theatre L.A. Live on June 24, 2010, in Los Angeles.

Michael Buckner/Getty Images for Summit Entertainment

Actors Kristen Stewart and Robert Pattinson speak onstage at Summit Entertainment presents "The Twilight Saga: Breaking Dawn - Part 1" press conference on July 21, 2011, in San Diego, Calif.

Kristen Stewart, left, and Robert Pattinson are seen on stage at the MTV Movie Awards on Sunday, June 5, 2011, in Los Angeles.

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Actors Robert Pattinson and Kristen Stewart arrive at the Premiere of Summit Entertainment's "The Twilight Saga: Breaking Dawn - Part 1" at Nokia Theatre L.A. Live on Nov.14, 2011, in Los Angeles. California. (Photo by Images)

Robert Pattinson and Kristen Stewart at the Los Angeles Premiere of "The Twilight Saga: Eclipse" on June 24, 2010, in Los Angeles.

Kristen Stewart and Robert Pattinson in "The Twilight Saga: Eclipse." — Summit Entertainment

Kristen Stewart and Robert Pattinson in a scene from "The Twilight Saga: Eclipse."

Robert Pattinson and Kristen Stewart on Jun. 24, 2010.

Kristen Stewart, left, and Robert Pattinson kiss as they accept the award for Best Kiss at the MTV Movie Awards in Universal City, Calif., on June 6, 2010.

Robert Pattinson, left, and Kristen Stewart accept the award for best kiss for "Twilight" at the MTV Movie Awards on May 31, 2009, in Universal City, Calif.

Robert Pattinson and Kristen Stewart attend the UK premiere of "The Twilight Saga: Breaking Dawn Part 1" at Westfield Stratford City on Nov. 16, 2011, in London.

Actress Kristen Stewart, left, and British actor Robert Pattinson arrive at the British premier of the film "Twilight," in London, Dec. 3, 2008.

Robert Pattinson, left, and Kristen Stewart accept the award for best kiss for " Twilight" at the MTV Movie Awards on Sunday May 31, 2009, in Universal City, Calif.

Kristen Stewart, left, and Robert Pattinson, right, pose for a photo during news conference held to promote their film "New Moon" at the Comic-Con International 2009 convention held in San Diego, July 23, 2009.

Actor Robert Pattinson, left, and actress Kristen Stewart at a cast appearance for the soon-to-be released feature film "The Twilight Saga: New Moon" in Los Angeles on Nov. 6, 2009.

Actors Kristen Stewart and Robert Pattinson attend the 2011 People's Choice Awards at Nokia Theatre L.A. Live on Jan. 5, 2011, in Los Angeles,. (Photo by C for PCA) *** Local Caption *** Kristen Stewart;Robert Pattinson

Actors Robert Pattinson and Kristen Stewart are immortalized in a hand and footprint ceremony at the Grauman's Chinese Theatre on Nov.r 3, 2011, in Los Angeles.,

Actor Robert Pattinson and actress Kristen Stewart accept the Best Kiss award onstage during the 2011 MTV Movie Awards at Universal Studios' Gibson Amphitheatre on June 5, 2011, in Universal City, Calif.

Actors Taylor Kristen Stewart and Robert Pattinson accept the Ultimate Choice award onstage during the 2012 Teen Choice Awards at Gibson Amphitheatre on July 22, 2012, in Universal City, Calif.

Actors Robert Pattinson and Kristen Stewart pose in the press room at the 2008 MTV Video Music Awards at Paramount Pictures Studios on Sept. 7, 2008, in Los Angeles.,

Actor Robert Pattinson and actress Kristen Stewart arrive to attend a photo call for the Catherine Hardwicke film "Twilight" on Dec. 8, 2008, at the Crillon Hotel in Paris, France.

Actors Robert Pattinson and Kristen Stewart attends the premiere of Summit Entertainment's "Twilight" at The Mann Village and Bruin Theatres on Nov. 17, 2008, in Westwood, Calif.

Actress Kristen Stewart and actor Robert Pattinson pose in the press room with their "Twilight" awards during the 18th Annual MTV Movie Awards held at the Gibson Amphitheatre on May 31, 2009, in Universal City, Calif. They won awards for Best Movie, Best Kiss, Best Fight, Best Female Performance, and Breakthrough Male Performance.

Actors Robert Pattinson and Kristen Stewart chat during the presentation of their new film "The Twighlight Saga - New Moon" during the HVB youth event at the Olympic Hall on Nov. 14, 2009, in Munich, Germany.