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The best way to get over a breakup? A vacation.

On Monday - the same day she announced her split from husband of nearly seven years, her Revolutionary Road director Sam Mendes -- Kate Winslet was spotted in a bikini on a boat in Mexico with her two children, Joe, 6 and Mia, 9.

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In a statement, lawyers said that Winslet, 34, and Mendes, 44 -- who wed in 2003 -- split earlier this year and that it was "entirely amicable and is by mutual agreement."

A source tells that the couple's "work schedules were too intense. They just couldn't make it work."

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Adds the insider, "They were never together. They are both so work-oriented that they found it hard to find time together."

Winslet was previously wed to Jim Threapleton.

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