Jessica Simpson thinks her marriage to Nick Lachey was her "biggest financial mistake." The 35-year-old singer has taken a humorous swipe at her first husband, with whom she won over the US with their popular MTV reality show 'Newlyweds: Nick And Jessica', by claiming their relationship threw her into money issues. When asked by Kelly Evans on 'Closing Bell' on Thursday to name some of her biggest financial mistakes thus far, Jessica replied: "The biggest money mistakes? I don't know. For some reason I thought of my first marriage!" The former couple, who shared the same manager, first began dating in January 1999 but called it quits shortly afterwards, only to rekindle their romance five months later. However, their marriage was short-lived as the young lovers announced at the end of 2005 they were going their separate ways, and Jessica later filed for divorce.