Winslet began dating Mendes in 2001 after he approached her about appearing in a play at the Donmar Warehouse Theatre while he was the artistic director there.
They married on 24th May 2003 on the island of Anguilla in what they characterised as a 'whim' while they were on holiday. (Wikipedia) 'We hadn't been planning to do it but we thought it was rather a good idea, so we just did it.' (IMDB)
They had two homes together- one in London that was worth £3 million and also one in New York City.
The pair have a son together; Joe Alfie Winslet Mendes who was born on the 22nd December 2004 in New York City.
Sadly, they announced their separation in March 2010 and divorced in 2011.
Allegedly, the initial stage of their divorce came through on the day Winslet was filming a scene for Mildred Pierce.