Kristen left to stew as Rob romances Elvis relation

Kristen Stewart is devastated Robert Pattinson has moved on from her with one of her co-stars.

'Twilight' hunk Robert is said to be dating Elvis Presley's actress granddaughter, Riley Keough - who starred with Kristen in 2010's 'The Runaways' - after the pair were spotted at his home in Los Angeles over the weekend.