Jennifer Aniston and John Mayer's relationship seems to getting more serious by day, with Jen introducing her man to her parents.

The couple - who recently rekindled their romance - dined with Jen's dad John and his wife Sherry Rooney at Beverly Hill's Polo Lounge.

An onlooker told Star, “Throughout the whole of the dinner, Jennifer and John couldn't keep their hands off each other.

"Jennifer was constantly rubbing his hair and John was rubbing her back, then every so often they would steal a kiss.

"They both looked very happy and very much in love.”

The onlooker added, “John spent a lot of time talking about his music philosophies - why certain decades have better music.

"He discussed his experiences with Aretha Franklin and made a joke about Tom Hanks.”

See Johnnifer in pictures below