HGTV star Heather Rae El Moussa accidentally called Christina Haack's house 'our home' during an Instagram Live stream while promoting her new show 'The Flip Off' on Jan. 29.

While it’s been years since Haack and El Moussa ended their relationship, The Flip Off has sparked questions about what happened between them and where they stand today. Scroll

Christina Haack and Tarek El Moussa split close to 10 years ago—but the mother of three still knows how to get under her ex-husband's skin. She displayed that skill in the latest episode of their HGTV show " The Flip Off " when she teased a "new partner" who she knew would spark some upset.

Christina Haack says signs were there for a divorce from Josh Hall as filming together on "The Flip Off" began.

In the episode, which was meant to be the start of a house-flipping competition pitting Haack and Hall against Tarek and his wife, Heather Rae El Moussa, Haack called Tarek up to invite him over to her house to fill him in on her relationship troubles.

HGTV star Christina Haack has shown that she is still close to her ex-husband Tarek El Moussa, but will it make her new beau uncomfortable? Here's what we know.

Tarek El Moussa confessed to a cringe-worthy slip-up! In a behind-the-scenes clip shared on social media for an upcoming episode of The Flip Off, the 43-year-old real estate mogul revealed that he once accidentally called his wife,