Jessica jealous of John and Cameron


A source close to Jessica Simpson says the singer is "really jealous" that ex John Mayer is seeing Cameron Diaz. "She had her mouth open a mile wide when she found out," says the source. "She just freaked." Simpson split with Mayer in May after dating him on and off for seven months, and "she thinks about him all the time," says the source. "She is so not over him."