Dave Grohl's relationship with the “Alternative Porn Goddess” is questioned in the wake of a cheating scandal

Dave Grohl's relationship with a Los Angeles hipster who ran a porn website has come under scrutiny after he made a sensational admission that he fathered an illegitimate child.

The hot 55-year-old frontman of the Foo Fighters is said to have gotten close to the heavily tattooed 40-year-old Annaliese Neilsen, even visiting her at their shared home and generously paying her bills, sources told The Post.

His roommate Tyler Ammons, 30, described the shock when he entered the living room of their Highland Park home in 2018 and found Grohl on the sofa, snuggling up to Neilsen – not least because he was a married father of three at the time.

“It was very strange. They were sitting very close to each other on the couch. Of course I knew who he was when I came in.

“I felt uncomfortable because I knew he had a family and kids, and I left,” Ammons told The Post exclusively.

“It was a casual thing the whole time [we lived together]. She would go and visit him. She wanted to go on tour with them in 2019.”

Neilsen, whose real name is Lara Neilsen, confirmed to the Washington Post that she is not the mother of Grohl's newborn daughter, whose father he recently announced his divorce from. The father was conceived outside of his 21-year marriage to 48-year-old Jordyn Blum.

When asked if she had an extramarital affair with Grohl, Neilsen replied: “This is a person I had a brief friendship with and who I know through friends of friends.

“I have nothing to say about it except that it is absolutely wrong.”

Neilsen founded God's Girls, a website featuring tattoo models, around 2006, which led Gawker to dub her an “alternative porn goddess.”

In the site's FAQ section in 2009, according to Gawker, it was described as “an alt-porn/alt-erotica site with a lot of really great, 100 percent exclusive pictures… The ladies are very pretty and some of them have tattoos and piercings and rebellious hairstyles.”

However, this company ran into trouble with competitor Suicide Girls, who accused it of stealing its appearance.

Another source, who met Neilsen in 2016 through another of her projects – the social networking group Girls Night In – said she had previously bragged about her alleged connections to the “Everlong” singer.

“She had pictures … She [had a relationship] “I was with him for years. She always said, 'He paid all my bills.' It's like she was saying, 'Why are you telling us this?'” said the source, who asked not to be identified.

The source also heard that the “My Hero” rocker and Neilsen – originally from Washington state, the birthplace of the grunge music that made Grohl famous – were spotted together at the gothic club Bar Sinister in Los Angeles.

A spokesman for Grohl did not respond to a request for comment Thursday about his ties to Neilsen.

The friend from the Girls Night In group – a community of “elite, all-female movers and shakers” according to an ABC profile – said they were not surprised when Grohl admitted in a shocking social media post that he had fathered an illegitimate child with a mystery woman.

“When the whole thing came to light, no one was surprised because it was an open secret that he was a fraud,” they said.

Grohl revealed on Tuesday that he cheated on Blum and recently had a daughter. He wrote: “I recently became a father to a baby girl born outside of my marriage. I plan to be a loving and supportive father to her.”

“I love my wife and children and am doing everything I can to regain their trust and earn their forgiveness. We are grateful for your consideration for all the children affected as we move forward together.”

Grohl, who has daughters Violet, 18, Harper, 15, and Ophelia, 10, hired a divorce lawyer before making the infidelity allegations public, a source told People magazine in a report published Wednesday.

Various online media outlets previously identified Nielsen as the person in a viral video in which a woman reprimands a Lyft driver for having a bobblehead doll of a Hawaiian woman on the dashboard of his car and threatens to fire him in a five-minute argument. However, The Post could not independently confirm that it is Neilsen's voice in the video.