Tarek El Moussa and Heather Rae El Moussa joke about the ‘tension’ on set with his ex-wife Christina Hall with the three starring in an upcoming HGTV show together. Tarek El Moussa and wife Heather Rae El Moussa surprised fans by teaming up with his ex-wife Christina Hall for a new show. The El Moussas and Christina will compete in HGTV's "The Flip Off.

" Christina's estranged husband, Joshua Hall, was originally cast in the show but has not been involved since the former couple announced their divorce. Tarek and Heather revealed what it's like filming as a blended family while speaking to Fox News Digital about their partnership with Visit Anaheim . "The only time there's tension is when she realizes she's losing," Tarek said of Christina.

"Outside of that, things are pretty good." CHRISTINA HALL JOKES ABOUT ‘CHEAPER AND SAFER' ALTERNATIVE TO HUSBAND WHILE VACATIONING Heather Rae and Tarek El Moussa are starring in a new HGTV show with his ex-wife Christina Hall. (Getty Images) "I feel like we've all come a long way," Heather added.

"We've been together 51⁄2 years, married almost three. And everyone's in a really good place right now. And we're just having a really good time filming the show and competing against each other.

" Heather admitted the show has "been stressful at times" but noted filming has been fun. "We have a lot of laughs, and we're going to kick her butt." The " Selling Sunset " star and Tarek mainly film together, but they sometimes film with Christin.