Their shock split in   August came after 13 years of seemingly wedded bliss.
But it is now being claimed that Gavin Rossdale and Gwen Stefani's divorce was down to his three-year affair with their Australian nanny, Mindy Mann. 
Little is known about the young childminder with peroxide-blonde hair, just like her No Doubt singer boss, but US Weekly alleges that the adultery was uncovered after Stefani found naked pictures and texts to meet for sex on their children's iPad.
"The iPad was linked to Gavin's phone," a family source told the publication.
"One of the other nannies discovered the exchange and told Gwen."
The British Bush rocker, 50, who is also father to model Daisy Lowe, 26, is claimed to have at first tried to deny any romantic links with their trusted employee, but when Stefani confronted him with the messages, he admitted it.
Mann had been tasked with taking care of the couple's three sons, Kingston, nine, Zuma, seven, and Apollo, 20 months, for a number of years and had often been spotted out and about in public with them.
But when the Don't Speak singer found out about the trysts in   February this year, the Aussie was let go.
The affair was said to have lasted three years, even through Stefani's third pregnancy with their youngest son, Apollo.
She filed for divorce on   August 3 and it was finalised in   October.
Last month, Stefani went public with her relationship with fellow coach on The Voice US,  Blake Shelton.
The 39-year-old country music star and his ex-wife Miranda Lambert, 32, filed for divorce in   July.
If you know Australian nanny Mindy Mann, please contact amy.croffey@fairfaxmedia.com.au