Christina Haack and Tarek El Moussa’s playful banter caught Ant Anstead’s attention on tonight’s episode of The Flip Off!. 

Anstead, 45, served as a guest judge on episode 4 of the HGTV series, which stars his ex-wife Christina, 41, her first ex-husband Tarek, 43, and his wife Heather El Moussa, 37.

Christina and Tarek’s interactions prompted Anstead to say that the former exes can’t stop ‘flirting with each other.’

Anstead — who is currently dating Renee Zellweger — joined Christina, Tarek, and Heather at Christina’s Newport Beach home in a clip shared by People.

Christina — who recently debuted her new boyfriend, the CEO and president of Network Connex, Christopher Larocca — was seen asking Tarek, ‘So were you bothering him or what?’ in reference to Anstead.

Tarek then quips, ‘Your presence just being around him is bothering him,’ to which Christina says, ‘No, he’s fine.’

Christina Haack and Tarek El Moussa’s playful banter caught Ant Anstead’s attention on tonight’s episode of The Flip Off!; Ant and Christina seen in 2019

Anstead, 45, served as a guest judge on episode 4 of the HGTV series, which stars his ex-wife Christina, 41, her first ex-husband Tarek, 43, and his wife Heather El Moussa, 37

Heather then asks, ‘I have a question. How is this situation?’ as she motions between Anstead and Christina. 

Anstead and Haack recently reconciled after years of strained relations following their divorce. 

Read More Christina Haack opens up about shock ’emotional embrace’ with ex Ant Anstead

However, Anstead avoids Heather’s question, instead telling Christina and Tarek, ‘Once you guys stop flirting with each other, let’s get into it. Cause we’re here to do a job.’ 

Tarek replies that he is just an ‘innocent victim’, joking, ‘I just sit here and she abuses me.’

Anstead agrees, joking, ‘We are both innocent victims.’ 

Tarek then jokes about forming a boy band with everyone, seemingly including Christina’s most recent ex-husband, Josh Hall, from whom she split in July 2024.

As they all laughed, Anstead doubled down on his ‘stop flirting’ joke, prompting Heather to warn him, ‘Ant, now you’re really going to be in trouble if you keep using that word.’ 

Anstead and Christina, who were married from December 2018 to September 2020, settled a heated custody battle over their 5-year-old son, Hudson in 2022.

Christina also shares daughter Taylor, 14, and son Brayden, 9, with Tarek, to whom she was married from 2009 to 2018. Meanwhile Tarek and Heather, whom he married in 2021, share son Tristan, 2. 

It comes after Haack opened up about a shocking ’emotional embrace’ she had with Anstead last year.

Christina and Tarek’s interactions prompted Anstead to say that the former exes can’t stop ‘flirting with each other’ in a clip shared by People

Anstead doubled down on his ‘stop flirting’ joke, prompting Heather, who married Tarek in 2021, to warn him, ‘Ant, now you’re really going to be in trouble if you keep using that word’; Heather and Tarek seen in 2024

Christina shares daughter Taylor, 14, and son Brayden, 9, with Tarek, to whom she was married from 2009 to 2018; they are pictured in 2016

The reality TV personality recalled how she unexpectedly reunited with her second husband and how they embraced after four years apart.

Last year, she said Anstead unexpectedly surprised her with a ‘huge,’ heartfelt hug after he learned about her split from her third husband Josh in July 2024.

In Wednesday’s episode of the HGTV star’s show The Flip Off, she opened up about the interaction.

‘Ant and I split up when Hudson was one and now Hudson is five,’ she said in a clip.

‘During the time between his first birthday and, I would say, his fifth birthday, we did not communicate a lot,’ she recalled.

‘After Josh and I split up, I went over to [Ant’s] house to pick Hudson up because I was taking him to a birthday party,’ she said.

‘And when I walked up to the door, he gave me a huge hug,’ she continued.

‘We hadn’t hugged in years.’

She said that was a turning point in their relationship after that heartwarming moment and nice gesture from her ex.

‘He just said, “I’m so sorry for everything you’re going through and I’m here for you no matter what you need.” It was a very nice moment,’ she recalled.

The reality TV personality recently recalled how she unexpectedly reunited with her second husband and how they embraced after four years apart; pictured May 2019 in Universal City

Last year, she said Anstead surprised her with a ‘huge’ heartfelt hug after he learned about her split from her third husband Josh Hall in July 2024; pictured with Josh in 2024

Anstead and Christina, who were married from December 2018 to September 2020, settled a heated custody battle over their 5-year-old son, Hudson, in 2022 

Her recent confession comes amid Ant’s romance with actress Renee Zellweger

‘We had a long talk after and we decided to put all the BS aside and be good co-parents, like Tarek and I, for Hudson.’

Later in the same scene, Haack calls her ex to ask him if he would make an appearance on her show was a guest judge.

The new series follows Haack and her design team as they compete in a house flipping compeтιтion against the El Moussas, her first husband Tarek and his now-wife Heather.

Tarek and Heather previously opened up about how they were shocked that Haack had recruited her second husband Anstead for the show.

They told People in February that they were caught off guard because they did not know Haack and Anstead were even on speaking terms after their messy divorce and custody battle.

New episodes of The Flip Off air Wednesdays at 8 p.m. ET/PT on HGTV.