Emily Blunt On When She Dated Michael Buble, And The Rumours He Cheated On Her

Who: Moby and Natalie Portman When: Moby and Natalie dated briefly in 2001. He said of their relationship: 'I guess in some people's eyes, [nerds] might be mildly sexy – and, as a nerd, I'm certainly happy to enjoy some of the effects of that. But as far as the very brief affair that I had with Natalie, it's made me a target of a lot of nerd wrath. You don’t date Luke Skywalker’s mom and not have them hate your guts.'

Who: Sandra Bullock and Ryan Gosling When: The Gosling dated his Murders by Numbers co-star while filming in 2002, despite their 16-year age gap.

Who: Joaquin Phoenix and Liv Tyler When: They dated for three years and lived together, after meeting on set of Inventing The Abbots.

Who: Renee Zellweger and Jack White When: Renee and the White Stripes singer were together for two years. Renee's spokesperson at the time about their split: 'They remain good friends. There's no scandal and no new relationships.'

Who: Ashton Kutcher and January Jones.□□When: 1998-2001. They met as models during a shoot for Abercrombie & Fitch. What happened: When Ashton went to New York to shoot The Distance, they grew apart and he predicted January’s career would be short-lived: ‘He was not supportive of my acting... he was like, “I don’t think you’re going to be good at this”,’ she said. No guesses who had the last laugh there then.

Who: Tom Cruise and Cher When: These two could be the strangest couple, well, ever. Two decades after their relationship Cher told Good Morning America that despite the 16-year age gap these two dated in the 80s. She said he was 'just the most adorable man you can imagine.'

Who: Sofia Coppola and Keanu Reeves When: In 1992 Coppola and Reeves dated after her father, Francis Ford Coppola, directed him in Dracula in 1992.

Who: Sarah Jessica Parker and Robert Downey Jr When: Back in the 80s these two dated for seven years and started dating when they were both 19.□□What happened: Robert has said of their relationship: 'I was so selfish. I liked to drink, and I had a drug problem, and that didn't jibe with Sarah Jessica, because it is the furthest thing from what she is. She provided me a home and understanding. She tried to help me. She was so miffed when I didn't get my act together. Sarah Jessica would pull me out of a hangover, and we'd go pick out furniture together. She is a force of nature!' He added: 'I was in love with Sarah Jessica and love clearly was not enough. I was meant to move on.'

Who: Will Smith and Tyra Banks When: These two dated for a year in 1993 after Tyra appeared on The Fresh Prince of Bel Air.

Who: Brad Pitt and Gwyneth Paltrow When: These Hollywood heavyweights were engaged and were together between 1994 and 1997. 'I'm so lucky that I spent time with Brad, somebody who was such a good person! Especially when I was, like, such a mess,' Paltrow said about the couple. What happened: Gwyneth said that they called off the engagement because she wasn't ready for marriage. This was her first high profile relationship and she has revealed that it taught her to watch her mouth: 'I said things about being in a relationship [with Brad Pitt] that felt wrong to me even as I was saying them.'

Who: Kirsten Dunst and Jake Gyllenhaal When: These two dated for two years from 2002 and lived together in Malibu. They owned a dog called Atticus. What happened: Kirsten said to Allure Magazine that they aren't friends anymore: 'It would be nice to see him, But we're not good friends.'

Who: Anna Friel and Robbie Williams. When: the late ’90s – they were the cool new Brit couple for, ooh, at least two months. What happened: Both were coming out of long-term relationships (she with Darren Day; he with Jacquie Hamilton-Smith). They split after Robbie was pictured on a 72-hour bender snogging a blonde while Anna was in Dublin.

Who: Brad Pitt and Sinitta. When: 1988-1990. They met when his agent called hers after he saw her on telly and fancied her. She wasn’t impressed. ‘I thought it was quite rude,’ she said. What happened: ‘We only had a brief affair’ is all Sinitta has said on the matter, although it’s thought they dated for two years. Brad went on to date his way through Hollywood’s A-Z, from Juliette Lewis to Gwyneth and Jen. Sinitta? Well, she moved on to Simon Cowell.

Who: David Arquette and Drew Barrymore. When: in 1991. Before they co-starred in Never Been Kissed (as siblings – gross!) and Scream, they were briefly together. What happened: They split on amicable terms after a few months. But did David ever truly get over her? Recently, he admitted to Howard Stern that he wished they’d had a baby. ‘How cool would an Arquette- Barrymore child be?’ Drew: truly, the one that got away.

Who: Matt Damon and Winona Ryder When: These two dated for three years, at the same time as his best pal dated Gwyneth Paltrow.

Who: Ryan Reynolds and Alanis Morissette. When: 2002-2007. It’s thought they met on the red carpet. Where else? What happened: The pair got engaged two years after meeting, before splitting in 2007. A year later, Ryan was married to Scarlett Johansson and Alanis was exorcising her sadness in excruciating detail on Flavors Of Entanglement.

Who: Matthew McConaughey and Sandra Bullock When: They dated after meeting on set of 'A Time to Kill' in 1996, but often denied that they were in a relationship claiming they were just friends. In 1997 Sandra said that 'we have fabulous chemistry together,' but said that they were only friends. What happened: These two remained close friends as Sandra said to Cosmopolitan: 'There’s a great amount of respect and love. I feel very cared for by Matthew. No matter where he is in his life or where I am in mine—he could be married—I know we would stay close.'

Who: Nicolas Cage and Sarah Jessica Parker. When: 1992, after meeting on the set of Honeymoon In Vegas. What happened: They split following the wrap party, with SJP merely stating Cage was ‘a wonderful travelling companion’. Post- filming, he moved on to Uma Thurman.

Who: Madonna and Vanilla Ice When: These two dated for 8 months in 1992. What Happened: Vanilla Ice explained to News of the World in 2011, 'I broke up with her after she printed that book [Sex] because I was hurt to be an unwitting part of this slutty package. It was disgusting and cheap. We were in a relationship yet it looked like she was screwing all these other people.'

Did you know that Christina Applegate dated Brad Pitt? We didn't - until the actress was asked about her date with Brad Pitt at the 1989 MTV Video Music Awards on TV show Watch What Happens Live this week.  Apparently Applegate ditched Brad for another guy - although she remained tight-lipped about it on the TV show. But Christina did reveal she has seen Pitt since then - although they never went out on another date again.

Back before the TV show Newlyweds and his marriage to Jessica Simpson, Nick Lachey dated Kim Kardashian! The former 98 Degrees singer hinted that Kim was desperate for fame during their time together - he said she would tell paparazzi their whereabouts so she could be photographed.

Apparently Mischa Barton and Jamie Dornan dated way back when - well, in 2007 before he was a Fifty Shades star. The pair were spotted at an Arcade Fire concert.