Ashton Kutcher allegedly cheated on his then-wife Demi Moore during their sixth wedding anniversary on September 24.

The couple did not celebrate their anniversary together as Moore was promoting her short film project 5, while Kutcher was partying at San Diego’s Hard Rock Hotel.

According to Us Weekly, Kutcher partied with Danny and Chris Masterson at Fluxx nightclub before heading back to his hotel suite at the Hard Rock.

Once back at his hotel suite, Kutcher and his friends met Sara Leal, a local blonde, and her friend.

One source said that Kutcher told the girls that he was separated from Moore.

After some “hard-core” flirting, they all went into the hot tub and started “making out.”

According to the same source, “Ashton looked hot and didn’t seem like he had a care in the world.

He was partying with the guys and girls nonstop.”

Moore, who was unaware of Kutcher’s infidelity, was reportedly “devastated” when she found out about the incident, and the couple eventually separated.

At the time, Kutcher denied the rumors of his cheating on Twitter, saying, “I think Star magazine calling me a “cheater” qualifies as defamation of character. I hope my lawyer agrees.”

However, the source told Us Weekly that Kutcher did, in fact, cheat on Moore, and that he was even “flaunting it” to his friends.

“He was all over Sara Leal, and she was into him, telling him how cute he was. He was totally checking her out,” the source said.

Furthermore, Leal was not the only girl with whom Kutcher allegedly cheated.

Another woman, named Brittney Jones, also claimed to have had an affair with Kutcher.

Jones told Star magazine that she slept with Kutcher in July 2010 while he was still married to Moore.

She claimed that they had sex on the couch in his and Moore’s home.

Kutcher and Moore were married for eight years before finally divorcing in 2013.

The couple did not have any children together, but Moore has three daughters from her previous marriage to Bruce Willis.

Kutcher has since moved on and is now married to actress Mila Kunis, whom he met while filming That ’70s Show.

The couple has two children together.

Meanwhile, Moore has written a memoir, Inside Out, in which she talked about her relationship with Kutcher, among other things.

In the book, Moore wrote that Kutcher cheated on her twice and that she blamed herself for his infidelity.

“I felt sick to my stomach,” Moore wrote about the time she found out about Kutcher’s affair with Leal.

“I knew she wasn’t lying.”

Despite the pain she went through, Moore said in the book that she eventually learned to forgive Kutcher and move on.

“I think it’s a natural human instinct to want to blame someone else for our pain,” she wrote. “But in the end, we just have to own our part in it.”