Dave Grohl is reportedly preparing for his marriage to Jordyn Blum to end in divorce.

The 55-year-old Foo Fighters frontman hired a divorce attorney before announcing Tuesday that he cheated on Blum, 48, and had a child out of wedlock, a source told People in a report published Wednesday.

The Post has reached out to Grohl’s spokesperson for comment.

Grohl announced his infidelity in a statement on Instagram.

“I recently became the father of a baby girl, born out of wedlock,” the musician wrote on Tuesday.

“I intend to be a loving and supportive parent to her. I love my wife and my children, and I will do everything I can to regain their trust and earn their forgiveness,” he added.

“We are grateful for your attention to all the children involved as we move forward together,” he concluded his statement.

A spokesperson for Grohl told The Post there was no further comment from the musician at this time.

The “Everlong” singer has been married to Blum since 2003. In a 2007 interview, he said he met her in 2001 while out with his bandmate Taylor Hawkins, who died in 2022.

“Me and Taylor were hanging out at the Sunset Marquis whiskey bar. Taylor was the star. I mean, girls were sending him drinks. This bombshell comes out and starts talking to Taylor. I’d just come out of a Tenacious D session. I’m in Vans trainers, no socks, dirty shorts and a dirty T-shirt, surrounded by beautiful Hollywood,” he told Q Magazine of his late bandmate.

“She waved her friend Jordyn over to me. I was like, ‘Oh my God. No chance!’ So I had a few drinks and acted like an ass. And by the end of the night I was pissed and I was staring at her and I was like, ‘You’re my future ex-wife,'” he laughed. “So she gave me her number: ‘Jordyn, your future ex-wife.'”

Blum has not yet issued a statement about his infidelity. Their two eldest daughters, Violet, 18, and Harper, 15, have deactivated their Instagram accounts. It is unclear when the pages went dark.

At last year’s Glastonbury Festival, the proud father brought Violet onstage to perform a song from his band’s latest album, “But Here We Are.”

“My favorite singer in the world,” he raved. “This is a song I wrote for my mother, Violet’s grandmother. This is ‘Show Me How.’”

The couple have a third daughter, Ophelia, 10.

Grohl confirmed in his statement that his fourth child is also a girl.