The Hills Kristin Cavallari's relationship reportedly ended over her career plans 07/27/2011 Kristin Cavallari's desire to continue focusing on her entertainment career was reportedly the reason behind her ex-fiance Jay Cutler ending their relationship. Read More RELATED NEWS Kristin Cavallari debuts new 24-year-old boyfriend Mark EstesBrody Jenner and Tia Blanco welcome their first child'The Hills' alum Brody Jenner engaged to pregnant girlfriend Tiarah "Tia" Blanco TAGS: Laguna Beach Kristin Cavallari Giuliana Rancic Jay Cutler
