Mayer Holds On To His Board For Dear Life

As John innocently frolics on the beach in Hawaii, Jess Simpson has reportedly contacted Jen Aniston to warn her about the crooner's "lothario" ways. 

A source says via Transworld News: “Jessica wants Jen to be aware of what she’s letting herself get into with John. She doesn’t want her to make the same mistakes. John is a ladies man.”

Nothing like a woman scorned.  John, maybe you should use two hands...