The married 'Snow White and the Huntsman' director had an affair with the 26-year-old actress - who was dating Robert Pattinson at the time - on the set of the 2012 movie but he has now branded their dalliance as a "mistake".
He told the Metro newspaper: "You never know what's coming in life. Around every corner, there's something unexpected, and that's life. You just have to brush yourself off and continue moving forward the best you can. Everyone makes mistakes.
"I am bound to make more mistakes, and I wouldn't expect my life to be exciting if I didn't. If you took people off the table for a momentary lapse, there would be no one making art."
Meanwhile, Kristen previously said the "scandal" turned women against her and they became very judgemental.
Referring to it last year,
The 62-year-old took to Instagram on Sunday to show off her weight loss – and her longtime Valentine: Stedman Graham.
"Stepping out with my Valentine of almost 30 yrs! #iovinewedding," she captioned a photo of herself cuddling close to 64-year-old Graham.
Winfrey wore a form-fitting red dress that flaunted her nearly 30 lb. weight loss, while Graham opted for a black suit with a striped tie.
Winfrey's Instagram snap indicates that the pair went to Liberty Ross and Jimmy Iovine's Valentine's Day wedding in Malibu.
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