Jennifer Aniston has been enjoying secret sex sessions with ex-boyfriend John Mayer, according to a new report.

The Twitter-happy musician reportedly visited New York - where Jen was filming The Bounty - for a tryst at The Four Seasons Hotel.

"John flew to New York in the middle of August for 48 hours to spend time with Jen while she was filming," a source tells Britain's Now magazine.

"He managed to give the paparazzi the slip and the couple spent time talking. John left convinced it’d be worth giving things one more shot.

"Of course, talking wasn’t all they did; their relationship’s always been based on great sex. Jen says she hasn’t met a guy who’s had this effect on her before – John’s the best lover she’s had. That’s why she’s glad to go back."

The insider claims that John is keen to make their racy reunions a more permanent fixture – and Jen has tentatively agreed.

The source adds: "John's previewed his new recordings for Jen, where he’s pouring his heart out about their relationship. That’s helping them to figure out if they have a future together.’

Jen's flirt fests with Gerard Butler on the Bounty set fuelled rumours the co-stars were hooking up in real life, although both denied the romance speculation.

Jen and John in pictures