Did Stewart cheat on Pattinson?

The Twilight Saga: Breaking Dawn Part 2, starring Kristen Stewart (left) and Robert Pattinson.

As the Twilight Saga prepares for its curtain call on Nov 22 with Breaking Dawn - Part 2, is it also the end of the Robsten romance?

According to E! News, photos have surfaced indicating that 22-year-old US actress Kristen Stewart (above) cheated on Robert Pattinson (above, right), her Twilight co-star and real-life boyfriend.

The third party is reportedly Stewart's Snow White And The Huntsman director Rupert Sanders, 41, who is a Briton, like Pattinson, 26.

Reps for Stewart, Pattinson and Sanders have not commented on or clarified the rumours.

This article was first published in The New Paper.

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