"I hate dealing with flips that have pools because they can cost a fortune," the real estate investor, 40, lamented via People as his ex-wife, 38, tells him, "Look on the bright side, we also get to do a fun design."
Tensions run high as Haack lists off all the possible ways they could fix up the pool, noting: "We could do that really cool glass tile or, because it's Spanish, maybe a cool clay tile. What about a waterslide?"
TheTarek's Flip Side star seems less than thrilled by her ideas, as he replies "no" and storms off set. "Fill it up with water," he carelessly states, before exiting the frame.
As OK! previously reported, El Moussa and Haack — who officially divorced in 2018 — announced that Flip or Flop would be ending after ten years on air. Despite fans' upset, for the former pair, the decision was a long time coming.
"Tarek and Christina are generally cordial. They're co-parenting and nothing gets in the way of that," an insider said of their dynamic. "The show was just too intimate of a setting at this point and it was time to close that chapter."
Meanwhile, Their finale feud was not the first outburst on set of the home renovation show. Over the summer, El Moussa reportedly stormed off in a fit during filming, boasting that he "made" Haack while calling her a "washed-up loser."
The Long Beach native went so far as to shout at the Christina on the Coast star: "Look at me, look at me, look at me. It’s called winning. The world knows you're crazy!"
After the incident, production stopped filming the co-parents together for the rest of the day.