Nick Lachey and Jessica Simpson Nick Lachey and Jessica Simpson

The New York Daily News reports that Jessica Simpson may come clean about her crumbled marriage to Nick Lachey in a no-holds-barred heart-to-heart with Diane Sawyer. While an ABC News rep tells the paper, "Diane has interviewed Jessica in the past and would welcome the opportunity to sit down with her again," Simpson's spokesperson insists the blonde bombshell has "no plans" to rehash the romance with any journo. What's more, her rep tells the News that an US Weekly cover story about Jess cavorting in carnal ways with Maroon 5's Adam Levine are "not true. Jessica is a single girl."