Christina Haack (formerly Christina Hall) shared a shocking truth about her past relationship with ex-husband Tarek El Moussa, and revealed that his mother, Dominique El Moussa, told the HGTV star that she should reconsider marrying her son.

Christina Haack and Tarek El Moussa's children appeared on "Flip or Flop" throughout their childhoods, returning to HGTV screens on "The Flip Off."

Flip or Flop has been a powerhouse franchise for HGTV going back more than a decade now, continuing via spinoffs even after Tarek El Moussa and Christina Haack divorced and the original series ended.