A source exclusively tells The Post that everyone feels "sorry" for Blum but that some friends are convinced that she "knew" Grohl cheated on her.

Foo Fighters founder Dave Grohl sent shockwaves through the entertainment industry when he admitted that he has welcomed a baby daughter "outside" of his 21-year marriage to wife Jordyn Blum.

Dave Grohl, frontman of Foo Fighters, just took to Instagram with a stunning announcement:

Former Nirvana drummer and Foo Fighters frontman Dave Grohl announced Tuesday that he’s fathered a baby outside of his marriage to wife Jordyn Blum. Grohl took to Instagram to say he plans on being a loving and supportive father to his newborn daughter, and that he “will do everything” to regain the trust of his wife and children.

Rocker Dave Grohl on Tuesday admitted he has just welcomed a new baby with someone other than his wife of 21 years.

Dave Grohl has experienced his fair share of relationship drama while in the public eye, including multiple cheating scandals. The Foo Fighters rocker has been married twice and stepped outside his marriage both times.

The lead singer of the “Foo Fighters,” Dave Grohl, is speaking out about his infidelity. Grohl has been married to his wife Jordyn Blum since 2003. The couple celebrated their 21st wedding anniversary on Aug. 2. Dave Grohl and his wife have been married for 21 years. s_bukley / Shutterstock.com Shutterstock

The rock legend Dave Grohl sent shockwaves across the globe when he admitted to fathering a child with another woman while married. The Foo Fighters' iconic lead and ex-Nirvana drummer, at 55, let his fans in on a personal secret via an Instagram post,

Years before his cheating scandal, Dave Grohl raised eyebrows when he called his now-wife, Jordyn Blum, his “future ex-wife.” While speaking to Q magazine, Grohl, now 55, recalled the night he met Blum,

Dave Grohl has said a viral post claiming to be a picture of the child he welcomed outside of his marriage is fake.