John Mayer and Jessica SimpsonJessica Simpson and John Mayer have added yet more to the “are they dating?” rumours after being photographed in each others arms at Sony BMG’s Grammys aftershow party.

On the way into the venue, E!’s Ryan Seacrest asked John if they were dating and John replied: “She is very beautiful, and you’ll be the last to know” - but in Japanese, forcing Ryan to find someone to translate it so he’d know the answer.

The pair were later spotted kissing each other on the cheek and John stroked Jessica’s back as he serenaded her with “Wishing Well” by Terence Trent D’Arby.

Jessica’s sister Ashlee Simpson and dad Joe Simpson were also at the party and when Joe was asked about the situation with Jessica and John, he replied: “I’m answering in the father’s language, which is ‘No comment.’”

John picked up two Grammys at the awards show for Best Pop Vocal Album and Best Male Pop Vocal Performance.