She\'s the beautiful English actress who was blamed for the breakdown of Kate Winslet\'s marriage to film director Sam Mendes.Now, 18 months after being implicated as the \"other woman\", it has been revealed that Rebecca Hall is dating the Oscar-winning film director.A spokesman for Mendes confirmed he was romantically involved with Hall, 29, saying: \"It\'s true they are in a relationship.\" A source close to the star added: \"They are dating and have been for some time. I can\'t put an exact date on it, but certainly nothing happened until after Sam\'s marriage was over.\" The couple are believed to be spending time together in London where Mendes, 46, is directing the new James Bond film Skyfall. News of their relationship comes 18 months after Hall was blamed for the collapse of Mendes\' six-year marriage to Titanic actress Winslet.At the time it was claimed Winslet ended the marriage after growing tired of her husband\'s closeness to Cambridge-educated Hall.Hall first met Mendes, who won an Oscar for his 1999 debut film American Beauty, on the set of her film, Starter For 10, where he was executive producer. He later cast her in two of his plays, a move that was said to have infuriated Miss Winslet.