Pattinson 'heartbroken and humiliated'

Robert Pattinson has been left "heartbroken and humiliated" after girlfriend Kristen Stewart cheated on him.

The heartthrob was stunned when he discovered his partner of four years had been caught kissing director Rupert Sanders - who she worked with on 'Snow White and the Huntsman' - and sources say he is struggling to cope with the news.