Pete Wentz swears that he and Ashlee Simpson aren't a couple, but a little birdie named Perez Hilton says otherwise. Sources tell Perez that Pete and Ash spent a romantic weekend in Cabo, Mexico. "Ash and Pete are just having fun and keeping it loose," a friend of the couple says.

If it walks like a duck and quacks like a duck, er, whatever -- you're together and you're not foolin' anyone, so stop frontin', kids!