Jennifer Aniston and John Mayer have been dating in secret for three months, according to U.s. reports.

Aniston sparked rumours she was romantically involved with the singer last month, when the pair was seen enjoying a string of romantic weekends together in Florida.

The couple has since been photographed kissing and holding hands, ending speculation they are just friends.

But now New York Post gossip column Pagesix is reporting that the pair has been dating for much long than previously thought - claiming Aniston started dating Mayer three months ago but managed to keep the relationship a secret until last month.

A source tells the publication, "They'd been keeping it under wraps and hiding out together on their dates."

"Then Jen realised it wasn't just a fling and decided to take it public."