Dating in the spotlight is tough. As soon as you’re spotted on a single date, you have paparazzi asking how long you’ve been in a relationship — and years into a relationship, you’ll have the same people asking when you’re going to break up. So, while Selling Sunset star Heather Rae Young has definitely enjoyed the outpouring of fan support for her relationship with Flip or Flop star Tarek El Moussa, she hasn’t totally been able to ignore the critics either. And as she and fiancé El Moussa both posted in celebration of their 18-month anniversary on Instagram, it seems that Young finally had to put her foot down and defend herself from those who don’t think she and El Moussa are built to last. According to Young, the timeline doesn’t convey just how serious things have gotten.