Dave Grohl's ex-girlfriend Kari Wuhrer has publicly criticized him as a 'scumbag' and 'serial cheater' following his admission of fathering a child with another woman, which has put his 21-year marriage to Jordyn Blum in jeopardy. Wuhrer, who dated Grohl in the late 1990s, recounted how he cheated on his then-girlfriend Tina Basich with her, and noted that she had heard rumors of his infidelity over the years. Grohl has acknowledged the birth of his new daughter and expressed his commitment to being a loving parent while working to regain his family's trust. Meanwhile, Blum has remained mostly silent but is reportedly considering writing a tell-all book about her marriage. Sources indicate that Blum may have been aware of Grohl’s infidelities but chose to overlook them for a long time. Wuhrer advises Grohl to apologize to his exes and hopes he will be a responsible parent to his new daughter.