“Both of them have been on TV since they were in [Christina's] belly," Tarek tells PEOPLE exclusively of Taylor, 14, and Brayden, 9 Tarek El Moussa and Christina Haack’s kids have a unique ...

Ahead of the premiere of their new show The Flip Off, the HGTV stars revealed to PEOPLE exclusively how their kids reacted to them reuniting for another series. The exes originally starred on Flip ...