Shania Twain has opened up about the time she found out her husband was cheating with her best friend.
The world famous singer has laid everything bare in her new documentary where she talks about the highs and lows of her career.
She mentioned her cheating ex-husband Robert 'Mutt' Lange in the new trailer for her Netflix documentary Not Just a Girl.
The 56-year-old talked about the moment she found that Robert, now 73, was having an affair.
Robert was cheating with long-time secretary and close friend of Shania Marie-Anne Thiébaud.
Shania compared the experience to losing her parents Jerry and Sharon Twain in a tragic car accident in November 1987.
She said: "It was similarly intense to losing my parents. I thought I had lost my voice forever. I thought that was it."
Shania first began her relationship with Robert when she met him in 1993 after he reached out after hearing her songs from her debut album.
The South African music producer and songwriter said he would write and produce songs for Shania.
The two of them had multiple phone conversations before they went on to meet in person at the Nashville's Fan Fair in June 1993.
The couple's relationship soon turned romantic as they went on to get married just six months later in December 1993.
Shania's career went from strength to strength after she began working with Robert as he wrote or co-wrote a lot of the songs on her second album The Woman In Me.
Robert co-wrote and produced some of Shania's biggest hits such as Any Man of Mine, You're Still the One, Man! I Feel Like a Woman! and That Don't Impress Me Much.
Shania and Robert had their son Eja on August 12, 2001, just seven years before the pair split after 14 years of marriage.
May 2008 saw news break that Robert was having an affair with Marie-Anne who was married to Swiss businessman Frédéric Thiébaud at the time and the two families were very close.
Robert and Marie-Anne initially denied the rumours which left Shania devastated.
Back in 2003 Shania had been diagnosed with dysphonia, a voice disorder that left her unable to sing and the stress of the affair made her condition even worse.
However, Frédéric and the singer were able to bond over the affair and eventually began a relationship themselves which Shania has said in the past was completely unexpected.
At first Shania said she wasn't interested in falling in love again but eventually gave in when they officially started dating in 2009.
They then announced they were engaged in December 2010 and went on to tie the knot in a small ceremony in Rincon, Puerto Rico on New Year's Day in 2011.
Not Just a Girl will be released on Netflix on July 26.
