If, like me, you are a longtime "Vanderpump Rules" viewer, you know many the US series is top-tier television. Yet still, in its 10th season, "Pump Rules" became must-see TV thanks to the secret affair between Tom Sandoval and Raquel Leviss. No, a cheating scandal isn't the most groundbreaking plot on a reality show, but since Tom had been with Ariana Madix for nine years and Raquel had often described Ariana, also her costar, as one of her best friends, the drama was high-octane. Though Tom and Raquel's relationship wasn't revealed on camera until the season's last episodes, the knowledge it was going on made every episode before absolutely must-see heading into a reunion that, for once, truly lived up to the hype. — VE