Demi Moore [Photo/Agencies]

Yearender: Celebrity breakups in 2013

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Demi Moore has been cosying up to Dead Sara drummer Sean Friday in Mexico.

The 51-year-old 'The Joneses' actress was spotted frolicking in the sea with the tattooed young rocker in Tulum on Monday, after jetting there with a group of friends, her daughter, Rumer, 25, and her on/off boyfriend, Jayson Blair, to ring in the New Year.

The duo looked happy and relaxed as they splashed about in the sea together and Demi climbed on to Sean's back with a huge smile on her face, according to the MailOnline website.

They were later seen playing with a friend's child on the beach.

Rumer posted a photo of herself and Demi on Instagram on Thursday, captioned: "I feel so lucky I got to start my new year off with my mom and a lovely group of friends."

The rumoured new couple have known each other for months.

Demi and Rumer watched Sean, who lives in Malibu, perform with his band at the El Rey Theatre in Los Angeles in May.

A source recently revealed that Demi, who also has two other daughters, Scout, 22, and Tallulah, 19, with her ex-husband, Bruce Willis, is on a new "happy" path after selling her $250,000 engagement ring from Ashton Kutcher after their divorce was finalised two months ago, following their split in November 2011.

An insider said: "Ashton broke her heart. Anything that reminds her of him makes her sad, and she wants to be happy."

The 35-year-old 'Two And A Half Men' star filed for divorce in December 2012 but it dragged on because they were reportedly at odds over how to divide their assets and $300 million fortune.

Ashton has since been with his former 'That 70s Show' co-star Mila Kunis, 30, and the couple, who began dating in April 2012, have been inseparable since they got together.