KXIP vs KKR Live Score

Christina Aguilera doesn't mind third-wheeling for fellow "Voice" coaches Gwen Stefani and Blake Shelton.

"Gavin is incredible father who only cares about his kids and is determined to protect them and shield them from all of this", a source close to the singer told ET on Wednesday.

Sources say Gavin was involved in a three-year relationship with nanny Mindy Mann, including a time period when Gwen was pregnant with their youngest son, Apollo.

Explosive new reports have hinted at a darker reason behind star couple Gwen Stefani and Gavin Rossdale's divorce, which the pair first announced in a joint statement back in August.

The Daily Mail printed a photograph of Rossdale and Mann hiking together and appearing intimate in 2012.

"For Gwen, it was apparently not just the affair that broke her, but also the fact her husband had been having it with a woman she knew and trusted", MailOnline noted.

Gavin Rossdale out with sons Kingston and Zuma and their nanny Mindy Mann
Gavin Rossdale out with sons Kingston and Zuma and their nanny Mindy Mann

To recall, the female singer discovered that her former spouse had a long-term affair with their nanny, who takes of their children, 9-year-old Kingston, 7-year-old Zuma and 20-month-old Apollo, in February.

The Bush frontman allegedly had a three-year affair with his childrens' nanny, according to a report by Us Weekly on November 11. "I don't know who said that but somebody did".

"I never said nothing about being in a new relationship", she told America's syndicated Frankie and Geena Morning Show.

"If Gwen would eat something or do a workout or get a new handbag, Mindy would do the same thing", a source told Us.

"I didn't tour at all, but I did record the No Doubt album, which was super hard", she explains. "It's very sweet. They don't just want to date; they want to be a family", shared a source. "But, I mean, all the other stuff is just craziness". She was soon made permanent and Stefani is said to have treated her like a sister - letting her borrow clothes and trusting her with the children. Blake really helped me.