Flip or Flop continues to film despite the high-profile divorce of its stars Christina El Moussa and Tarek El Moussa, but sources say things are pretty nasty behind the scenes.

"The mood differs day to day, but Christina avoids Tarek," a source told Us Weekly of what it's like to be on the set of the HGTV reality series. "He does things to piss her off, like bragging loudly about sleeping with girls."

Christina and Tarek always bicker on Flip or Flop, typically over budget, but the estranged exes reportedly hardly speak off-camera.

Tarek filed for divorce earlier this month citing irreconcilable differences.

The pair announced on December 12 they were splitting after seven years of marriage, but they had already been living apart and dating other people by then. They quietly separated in May 2016, according to Us, and Tarek has allegedly been living up the single life ever since.

Over the course of eight months, insiders claim Tarek, 35, has had flings with two women in their twenties -- one of the family's former nannies, 23-year-old Alyssa Logan, and more recently, one of Logan's friends.

"[Christina] thinks Tarek is an absolute pig," the source said.

After the split, Tarek reportedly rented a bachelor pad nearby Newport Beach last summer, according to a local, and partied on his $1.2 million Sea Ray Sundancer 510 yacht. He allegedly became smitten with Logan and then "hired her as a nanny to get close to her."
By September, Tarek had reportedly released Logan from payroll so they could date. 

"Alyssa was his girlfriend," the source told the magazine.

A Christina friend said Tarek spoiled Logan by buying her a Jeep and taking her on vacations to Las Vegas and New York aboard a private jet when they were together. The source claimed, "Tarek blows money in order to impress people."

When Christina found out about Tarek's romance with the nanny, she didn't spring into action.

"The kids are all she cares about, and Alyssa was good with them," noted the Us source, although Christina hired her own nanny for the kids and never interacted with Logan. 
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Tarek's relationship with Logan quickly crumbled, however, and so he became romantically involved with one of her friends, an aspiring model, in December, according to the magazine. But in a recent statement, Tarek shot down "fake news" and "lies" out there about him.

Reports have also circulated Christina has been dating a contractor, Gary Anderson, who used to work for the family.

Christina's initial concern for Tarek -- who fled the family's $2 million Yorba Linda, CA, home with guns in his backpack in May of last year, prompting authorities to check on a "possibly suicidal male" -- has reportedly disappeared entirely due to his alleged antics.

The couple tied the knot in May 2009 and cited the "unfortunate misunderstanding" in May 2016 and "challenges" in their marriage as the reasons behind their breakup when they first announced their decision to part ways.