This is 2015, and people are still shocked to hear that a celebrity slept with the nanny?

According to gossip tabloids, singer Gwen Stefani filed for divorce from her husband, musician Gavin Rossdale, because he allegedly slept with their nanny for three long years.

In fact, Rossdale, 50, left Stefani’s bedside to go have sex with the young nubile nanny after Stefani gave birth to their son, Apollo.

Now that’s lowdown.

According to Us Weekly, Stefani realized something was up when she discovered steamy text messages and nude photos sent between Rossdale and their nanny, Mindy Mann, on an iPad.

Mann was hired to watch over the couple’s three sons, Kingston, 9, Zuma, 7, and Apollo, 20 months.

Stefani reportedly discovered the evidence on the family’s iPad that Rossdale carelessly forgot was linked to his own cellphone.

Stefani is 46, and their nanny is 20-something. The physical resemblance between the 2 women is striking. In fact, Mann played dress up in Stefani’s clothes when the singer wasn’t home. She also wore her hair like Stefani.

As teenager, Rossdale was involved in a sexual relationship with gay rocker Marilyn for 5 years. Marilyn now goes by the name Peter.

Ladies, stop hiring young nubile women to watch your children. Watch your own children or pay a family member to watch them. If you don’t have family living close by, hire an older woman in her 50s or 60s to watch your kids.