Shania Twain drops her ex-husband from her life after he cheated on her with her best friend

Shania Twain performing at Rockefeller Plaza in New York. Photo / AP

By Natalie Wolfe

When Shania Twain married the ex-husband of her own ex-husband's mistress (and former friend), she had well and truly won the breakup game.

But clearly the Canadian singer wasn't quite done and, in her first music video in 15 years, Twain has again taken aim at her ex, quite literally dropping him from her life.

The video for Shania Twain's brand new single Life's About To Get Good, features the singer fixing her life after her very painful and public breakup from Robert Lange, her husband of 14 years.

Shania Twain with her second husband Frederic Thiebaud, the former husband of her own ex-husband's mistress. Photo / Getty Images

In the admittedly very cheesy music video, Twain holds a pamphlet that translates to "Cured Heart" with the slogan "Open at your own risk".

When Twain decides to open it, she sees a beautiful island pool with a man telling her "Changing your life starts from within".

Before long, the singer's house is flooded with a bunch of workers ready to revitalise her life - and fix her broken heart.

A worker then hands her a picture of her and Lange and, after a longing stare, she flips the frame upside-down and drops her ex out of the picture.

The video also features some of Twain's beloved outfits from her music videos for the 1997 album Come On Over, which is still one of the best-selling records of all time.

Twain shows off her flawless figure in the same black corset and black top hat she wore for her 1997 single Man, I Feel Like A Woman, over 20 years since the iconic video was released.

Twain holds a photo of her and ex-husband Robert Lange. Photo / YouTube

Twain tips him out of her life. Photo / YouTube

Twain and producer Robert John 'Mutt' Lange married in 1993, and their romantic partnership also produced some of the biggest hits of the 90s - Lange's fingerprints were all over Twain's glossy, radio-friendly country pop singles.

But their marriage dissolved amid scandal in 2008, when it emerged that Lange had an affair with Twain's best friend, Marie-Anne Thiébaud.

Confronted with the fact her husband and best friend were having an affair, Twain fell into a deep depression. She even emailed her (now former) friend to beg for her husband back:

"I am dying, and I can't take it any more. This is killing me. Have mercy," she wrote.

It was largely speculated that Twain's huge musical hiatus - her last full-length album Up! was released back in 2002 - was due to the loss of Lange from her life, the man who had been her co-producer for all of the singer's biggest hits.

However, her new single proves those critics wrong.

The lyrics to Life's About To Get Good are painfully truthful and have been praised by her thousands of fans.

"I wasn't just broken, I was shattered / I trusted you so much, you're all that mattered.
"I couldn't move on and I think you were flattered / Though it's time to forget you, forever," she sings.