Did K-Stew cheat on R-Patz? Robert & Kristen Wed-25-Jul-12 18:14 Share this It seems the honeymoon is over... One of Hollywood's most talked about couples may have called it quits - all because Kristen Stewart couldn't keep it in her pants.What's been hailed as a mistake and a 'complete lapse of judgement' on her part could have ruined her relationship with Robert Pattinson forever. According to sources, Kristen got a wee bit cosy with Snow White & The Huntsman director, Rupert Saunders. And to make matters even worse, Saunders has a wife and two kids.A rep for Stewart had no comment. You May Also Like Kristen Stewart wants to shave her head Kristen Stewart lashes out at paparazzi Katy Perry apparently responsible for R-Patz and K-Stew’s break-up Become a fan of The Edge on Facebook and on Twitter .