Gwen Stefani Cheated On With Their Children's Nanny For Years

Gwen Stefani reportedly pulled the plug on her marriage after discovering that her husband had been sleeping with their kids’ nanny.

Gwen Stefani and Gavin Rossdale called it quits after 13 years. (Photo : Getty Images)

The reason behind Gwen Stefani and Gavin Rossdale's divorce has been revealed. An insider told Us Weekly that Rossdale was having a three-year affair with the couple's longtime nanny, Mindy Mann. The No Doubt singer reportedly pulled the plug on her 13-year marriage to Rossdale after finding out about his affair.

Stefani found explicit and shocking text between Rossdale and Mann, nude photos of Mann and details of their plans to meet up for sex on the family's iPad. Stefani reportedly learned about her husband's extramarital affairs on Feb. 9.

"The iPad was linked to Gavin's phone," a family insider told Us Weekly. "One of the other nannies discovered the exchange and told Gwen."

Mann, who had been helping take care of the couple's three sons - 9-year-old Kingston, 7-year-old Zuma, and 20-month-old Apollo - was eventually fired. Rossdale reportedly insisted that his relationship with Mann was simply "flirtation." He later admitted to the affair months later.

The source told Us Weekly that Rossdale's affair "completely devastated" Stefani and that she was "mortified, livid, and embarrassed." Rossdale's affair, which took place while Stefani was pregnant with their youngest son, led Stefani to file for divorce in August.

"This was done right under Gwen's nose," the source told Us Weekly.

Stefani recently called her split from Rossdale "unexpected."

"I had been writing because my life blew up," she sad during an interview with KIIS FM's Jojo Wright Monday. "Everybody knows that my life blew up last February. I'd just been dealing with that. Unexpected. I was going along thinking that was going to be the rest of my life and it's not. I don't know what happened.