Just In: Dave Grohl’s ex not surprised that ‘scumbag’ cheater welcomed love child outside of Jordyn Blum marriage. Read more

Dave Grohl has been a “Pretender” for years, according to his ex.

Kari Wuhrer spoke to TMZ Thursday about her ex fathering a baby outside his marriage to Jordyn Blum, alleging to have heard “rumblings” about the Foo Fighter frontman’s alleged infidelity for years.

The model, 57, was romantically linked to Grohl, 55, in the 1990s during his relationship with Tina Basich.

Wuhrer, however, claimed to not have known that the musician was also dating the snowboarder, 55, during their time together.

“I never heard about her,” she alleged to the outlet. “He never spoke of it.”

In fact, she claimed that she was the one who accidentally “let … the cat out of the bag” when Wuhrer called into the “Howard Stern Show” to complain about the Nirvana drummer yelling at her.

Basich broke up with Grohl after finding out about the radio show — and Wuhrer claimed to have never heard from the rocker again.

When the exes ran into each other years later while taking their children to a play place, he allegedly “would just look at [her] like [she] didn’t exist.”

Wuhrer added, “I just felt like I knew he was scumbag after that.”

Grohl’s love life has been under the microscope since he admitted to welcoming a love child in an Instagram statement last week.

“I love my wife and my children, and I am doing everything I can to regain their trust and earn their forgiveness,” the Grammy winner wrote of Blum and their daughters — Violet, 18, Harper, 15, and Ophelia, 10.

While he has yet to divulge further details, Grohl’s rep did deny a social media user’s viral claim that she is the mother of his infant daughter.

Unlike Wuhrer, Grohl’s ex Jennifer Finch defended him in the wake of the bombshell, gushing to TMZ about his family dynamic.

However, a source told People that “Dave’s flirty behavior has been a hurdle in their marriage” and “hurtful to Jordyn.”

While the insider claimed Blum “was shocked when she found out about the baby,” a source claimed to The Post that Blum’s friends believe the 48-year-old “knew” her husband was cheating.

She stepped out for the first time post-cheating scandal on Tuesday to play tennis for four hours — and sans wedding ring — with her tennis coach, Christopher Crabb.

Grohl was allegedly “jealous” of Blum’s bond with her married instructor, according to the Daily Mail.

The songwriter was previously married to Jennifer Youngblood, with the duo calling it quits over his alleged “admitted infidelities.”