Dave Grohl’s ex Tina Basich wrote about rocker’s infidelity years before baby scandal: ‘Rockstar exits are the worst’

Snowboarding pioneer Tina Basich claimed Dave Grohl cheated on her during their relationship — decades before he admitted to fathering a child outside his current marriage .

In her 2003 memoir, “Pretty Good for a Girl: The Autobiography of a Snowboarding Pioneer,” Basich, 55, wrote about the pain of learning Grohl, also 55, was allegedly romancing her and another woman simultaneously.

The pair dated for about two years in the late ’90s and broke up right around the time Basich broke her leg, which sidelined her career for months.

The athlete detailed how “busy” the rocker was with his “multimillion-dollar record contracts, deadlines with record labels, music videos [and] press tours” — all while “trying to maintain a focus on being creative and writing music.”

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“The pressure was too much for our relationship to handle,” she admitted. “You can only give up so much of your heart and your career and your time and your spirit, and here I was, giving it all up for a guy and losing myself in the process.”

Basich felt she was “taking time away from his career” while putting hers “in the backseat without even realizing it.”

She penned, “I don’t know how anyone in his profession can have a normal relationship with a girlfriend…or two, as it turned out. I found out secondhand, through the grapevine, when it seemed like everyone else in the world knew about it but me.”

Basich confessed she was “so disappointed and pissed” at herself “for being sucked in.”

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“Breakups suck. But Rockstar exits are the worst,” she told her readers, claiming, “All I got was a five-minute phone call from him, after five weeks of me calling and trying to get ahold of him because I just had to know if these rumors were true and had to hear it straight from the source.”

Basich insisted she got “nothing” from the Nirvana drummer-turned-Foo Fighters frontman, who “dropped off the planet” in her world “but was everywhere else” given his superstardom.

The multi-X Games winner said she “couldn’t escape the thought of him,” even when running mundane errands.

“I went grocery shopping a few days after we broke up and heard the elevator-music version of ‘Learn to Fly,’ which gave me an instant stomachache, then saw him on the cover of Guitar magazine staring at me in the check-out line,” she recalled, adding that she “didn’t know how to handle it” because she thought she was “not that strong.”

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Reps for Grohl did not immediately respond to Page Six’s request for comment.

On Tuesday, the musician revealed his indiscretion in a statement shared on Instagram.

“I’ve recently become the father of a new baby daughter, born outside of my marriage. I plan to be a loving and supportive parent to her,” announced Grohl, who has been married to second wife Jordyn Blum since August 2003.

“I love my wife and my children, and I am doing everything I can to regain their trust and earn their forgiveness.”

Grohl — who did not disclose his mistress’ identity — concluded his message by saying that he and his family are “grateful” for the public’s “consideration toward all the children involved” as they “move forward together.”

He and Blum, 48 — who were last seen publicly looking happy at Wimbledon in London on July 2 — share three daughters : Violet Maye, 18, Harper Willow, 15, and Ophelia Saint, 10.

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