It seems Jennifer Aniston and John Mayer may not have put a lid on their relationship, after the former couple were reportedly spotted kissing in Los Angeles on Monday.

The super singleton and her pop star ex are said to have met up in New York whilst Jen was promoting her upcoming films Marley And Me and He's Just Not That Into You.

According to a US publication, the on-off couple then shared a private jet to Los Angeles where they were seen looking more than just good Friends.

A source tells the National Enquirer, “They were very lovey-dovey. They kissed several times and hugged each other tightly.

“John gave her a long, lingering kiss.”

John and Jen dated for almost four months before calling it a day in September.

John later went on the record saying that the chemistry wasn't right.

See why Jen is defending her love life here

Check out loved up John and Jen below before the split