Jessica Simpson's Mayer meal

Apr 30, 2009, 9:30 GMT

Jessica Simpson. One source told gossip website X17Online: "They were keen not to be seen together but they looked so happy to be in each other\'s company. It looked to me like they were more than just good friends!" © A. Gilbert / PR Photos

Jessica Simpson reportedly enjoyed an intimate lunch with ex-boyfriend John Mayer.

The singer-and-actress, who is currently dating American football star Tony Romo, secretly met John for a meal in Calabasas, California, recently and onlookers claimed they couldn't contain their joy at seeing each other.

One source told gossip website X17Online: "They were keen not to be seen together but they looked so happy to be in each other's company. It looked to me like they were more than just good friends!"

Musician John - who has been single since breaking up with Jennifer Aniston earlier this year - split from Jessica in November 2007. Friends claim the blonde beauty was left devastated by the end of the relationship.

Last year, it was claimed Jessica went on a drinking binge to drown her sorrows after learning John was dating Jennifer.

However, the 28-year-old beauty has always insisted she is happier than ever with Tony as he "saved" her.

Jessica - who is divorced from Nick Lachey - said: "I would always fall for guys I wanted to save. For the first time, I fell in love with someone who saved me."