Heather Rae El Moussa breaks down the dramatic finale of Selling Sunset season 4 with ET, explaining why she got so frustrated so fast with Christine Quinn. Heather shares behind-the-scenes intel about the day and details a fourth-wall breaking moment, in which she repeatedly reminded husband Tarek El Moussa that he was on camera and micd during the shoot. Heather teases where things go between Christine and the rest of The Oppenheim Group in season 5, and sheds new light on Christine roping her into the drama with Emma Hernan over a mutual ex. All four seasons of Selling Sunset are now streaming on Netflix.Exclusives from EntertainmentTonight :