Britney Spears claims Justin Timberlake cheated on her with ‘another celebrity’: report

Britney Spears reportedly has more bombshells about ex Justin Timberlake in her upcoming memoir.

Spears claims that former “Mickey Mouse House” flame Timberlake cheated on her with “another celebrity” during the pair’s very high-profile romance in the early 2000s.

According to a new report from TMZ on Wednesday, the “Womanizer” singer alleged in “The Woman in Me” that she would not reveal the star’s identity because she “now has a family” and Spears “doesn’t want to embarrass” them.

Following the pair’s split in 2002, Timberlake, 42, released his iconic ballad “Cry Me a River,” which led several fans to conclude that Spears, 41, had been unfaithful to the former teen heartthrob.

While Timberlake never officially stated that Spears had committed an indiscretion, the “Stronger” songstress never commented on the real reason for their split.

The Post reached out to Timberlake for comment.

Spears’ accusation of infidelity is only the tip of the iceberg when it comes to her former beau.

On Tuesday, an excerpt from her upcoming novel was published by People, with the star claiming that she had an abortion when they were together because he was reportedly not ready to be a father.

“I loved Justin so much. I always expected us to have a family together one day. This would just be much earlier than I’d anticipated,” wrote the Princess of Pop. “But Justin definitely wasn’t happy about the pregnancy. He said we weren’t ready to have a baby in our lives, that we were way too young.”

“I’m sure people will hate me for this, but I agreed not to have the baby. I don’t know if that was the right decision,” she added. “If it had been left up to me alone, I never would have done it. And yet Justin was so sure that he didn’t want to be a father.”

Since Spears’ revelation, several fans have speculated that her 2003 hit “Everytime” was actually about her pregnancy.

In the two-decade-old video, Spears can be seen running down the hallways of a hospital before entering the room of a woman who appears to flatline, and then another, where a woman cradles her newborn baby girl.

“So, Britney Spears’ ‘Everytime’ is actually a lullaby for her unborn child with Justin Timberlake. This makes the meaning of the song a whole lot different now. She’s drowning herself to be with her baby; that’s my interpretation of the song & [music video],” speculated one fan on X (formerly Twitter).

“The HORRIBLE news about Britney’s abortion bc of Justin Timberlake just took ‘Everytime’ music video to a whole new view. She deserved better,” a second echoed.

A source close to the former “Bye Bye Bye” singer recently alleged that Timberlake was “concerned” about what might be written about him.

“It’s eating at him,” one insider shared to Page Six, while another person close to the tell-all memoir claimed the book was “not a takedown” of anyone in particular.

Their relationship was thrust under a microscope once again in the 2021 Emmy-nominated New York Times documentary, “Framing Britney Spears,” forcing the “SexyBack” singer to issue an apology to Spears.

“I want to take accountability for my own missteps in all of this as well as be a part of a world that uplifts and supports,” Timberlake wrote on Instagram. “I care deeply about the wellbeing of the people I love and have loved. I can do better and I will do better.”

Timberlake later supported Spears when she spoke out in open court for the first time about her “abusive” 13-year conservatorship, which has since ended.

“Regardless of our past, good and bad, and no matter how long ago it was . . . what’s happening to her is just not right,” the “Trolls” star wrote on X, pleading with Spears’ family to “make this right and let her live however she wants to live.”

Spears’ bombshell novel, “The Woman in Me,” is set to hit bookstores on Oct. 24.