Tarek El Moussa has been keeping up with Christine Quinn’s comments on his relationship with her Selling Sunset costar Heather Rae Young — and he has something to say about it.“Christine has a big mouth,” the Flipping 101 With Tarek El Moussa star, 39, said on the Tuesday, December 8, episode of Dear Media’s “Not Skinny But Not Fat” podcast. “She said some s–tty things about us.