[Images:
Ace Pix]
Cameron Diaz wasn't going to let the news of Jessica Simpson's reported jealousy ruin her birthday celebrations in New York yesterday. Cameron is said to be dating rocker John Mayer who split with the
Newlyweds star back in May after a turbulent relationship. A friend of Jessica's is reported to have said:
"She had her mouth open wide when she found out. She just freaked out. She thinks about him all the time. She is so not over him."