Jessica Simpson insists she still has a sense of innocence about her even after her public break-up from estranged husband Nick Lachey. The couple split last November (05) and the WITH YOU singer has since been linked to a series of men including Adam Levine, DANE COOK and Jared Leto. Although she has denied any rumours of romance, Simpson claims she has become more cautious about her personal life. She explains, "I am guarded, a little bit jaded. I still have an innocence about me. "And I hope people can still believe my smile."