Some Hills fans may have been shocked to see photos of embattled couple Heidi Montag and Spencer Pratt reunited in California over the weekend, but their former MTV co-star Kristin Cavallari would hardly be surprised to see the camera-loving reality stars back together. "Honestly, I think it's fake. I don't think they are really getting divorced," Kristin told In Touch at the global launch of the Montblanc John Lennon Edition pen in New York. And Kristin may be right. After pictures emerged of the pair participating in the Avon Walk for Breast Cancer in Carpinteria, Calif., on September 12, Heidi, who filed for divorce from Spencer in July, said she and her estranged hubby are "just taking life second by second." Much to the dismay of their many enemies, it looks like Speidi may just survive!