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Avril Lavigne flirting with another man, on the eve of her divorce with Deryck Whibley.
The 'Girlfriend' singer - who announced she was separating from the Sum 41 rocker last week – spent a month partying on oil heir Brandon Davis' yacht in St. Tropez, South of France, and sources say the pair have grown very close.

One is quoted by gossip blogger Perez Hilton as saying: “She was downing shots, drinking booze from the bottle and play-fighting men on the beach.

"She wasn't acting like a married woman at all."

Avril Lavigne confirmed in a statement that she and fellow Canadian rocker, Sum 41 frontman Deryck Whibley, have separated.

"I am grateful for our time together, and I am grateful and blessed for our remaining friendship. I admire Deryck and have a great amount of respect for him. He is the most amazing person I know and I love him with all my heart," she said on her website.

Lavigne, 24, is reported to have asked Whibley, whom she married in 2006, to move out of their Los Angeles mansion.