Gwen Stefani Stabbed In The Heart

Gwen Stefani knew husband Gavin Rossdale cheated on her with grunge queen Courtney Love — and stayed with him!

The widow of Nirvana rocker Kurt Cobain even boasted about her illicit eight-month affair with Gavin to radio shock jock Howard Stern!

When asked in 2010 if she was having sex with the married Bush frontman, Courtney answered, “Yes,” adding, “she (Gwen) does know.”

Then, in another slap in the face, Courtney claimed Gavin was two-timing “The Voice” coach with several other women!

“Everyone … yeah … and a few other people,” Courtney revealed.

The National ENQUIRER has learned the news didn’t shock Gavin’s ex-boyfriend Marilyn, who dated Gavin when he was an up-and-coming rocker in London.

“It doesn’t surprise me in the slightest,” cracked the cross-dressing pop star born Peter Robinson. “The reason we split up is the same thing. He cheated … (with) loads of girls.”

Despite Gavin’s fling with Courtney, Gwen gave birth to their third son, Apollo, in 2014.

His big brothers are Kingston, 9, and 7-year-old Zuma.

The parents announced they were divorcing in August after 13 years, and now Gavin, 49, may be angling for a chunk of Gwen’s $80 million to $100 million fortune.

While Gavin is worth $35 million, the couple had no prenup, and a source said he is now demanding half of the 46-year-old No Doubt singer’s loot.

“Gwen is furious,” said the source, “because at the outset of the divorce, Gavin said he wouldn’t go after her money.”