The singer and actress celebrated her new freedom recently with friends in Los Angeles. A source told Us Weekly magazine, "She was telling friends, ‘We were so different, we were fighting so much. I’m really happy to be out of that relationship. This time, it’s totally done.’"
Another source close to the star confirms that Simpson is officially single. Simpson, 26, and Mayer, 29, shared a nine month romance before breaking up last month.