Vowing to ditch the "emotional roller coaster" that defined her past slim-down efforts, Rue turned to Jenny Craig at the end of last year to regain control. Nine months later, the actress shed four dress sizes and trimmed a whopping 50 lbs. from her frame. "I love that I can run further than my fiancé [teacher Kevin Price]," she tells PEOPLE. "He loves me just the same, but I love me more."