Shania Twain has insisted she "doesn't hate" her ex-husband Robert 'Mutt' Lange after he had an affair with her best friend , but said she will never forget what happened. The 58-year-old singer was left heartbroken in 2008 when it was revealed her husband of 15 years was having an affair with her close friend Marie-Anne Thiebaud. After the marriage broke down, Shania later married Marie-Anne's former husband Frederic Thiebaud and has now said she bears no grudge against her ex-spouse.

During an appearance on Jamie Laing's Great Company podcast, Shania stated: "Forgiveness is in the family of letting go. But forgiveness, more specifically for me anyway, is not about forgetting necessarily." For all the latest on news, politics, sports, and showbiz from the USA, go to The Mirror US .

READ MORE: Jennifer Garner 'just wants ex Ben Affleck to be happy' amid Jennifer Lopez divorce rumours Robert 'Mutt' Lange cheated on Shania Twain ( Image: Getty Images) She's since moved on with Frederic Thiebaud ( Image: Getty Images for ZFF) She continued: "It's about understanding the other person, and that might mean that they're wrong." Speaking about Robert, she added: "So do I hate my ex -husband for making a mistake? No. It's his mistake.

Not my mistake. "It's really unfortunate for him to have made such a big error that he has to live with. And I don't know what that feels like, but it's not my burden to bear.

" She also recently disclosed how she has been co-parenting her 22-year-old son.