Are Dakota Johnson And Jon Hamm Dating?

Before Eva Mendes, before Rachel McAdams, Ryan Gosling dated Sandra Bullock. The two met on the set of their 2002 film Murder By Numbers and hit it off despite the 16 year age difference. The relationship was short-lived though, with the pair calling it off after just a year.

Canadians Ryan Reynolds and Alanis Morissette met in 2002 and dated for four years. The pair got engaged, but sadly split in 2006 before they made it down the aisle. Ryan has gone on to marry Scarlett Johansson and Blake Lively, sharing two daughters with the latter.

Ben Affleck and Gwyneth Paltrow were one of the hottest couples of the late '90s, dating on and off from 1997 until 2000, after her split from fiance Brad Pitt. Recently, Gwyneth has spoken about the reason behind their break-up, saying they were very different people: 'Ben makes life tough for himself,' she said. 'He's got a lot of complication, and you know, he really is a great guy. I just think we have a very different sort of value system.'

After the breakdown of her relationship with Johnny Depp, Winona Ryder moved on with another hot actor of the '90s, Matt Damon, dating him from 1998 for a few years until 2000. The couple were introduced by Gwyneth Paltrow, who was dating Matt's Good Will Hunting script-writing partner Ben Affleck.

It's weird to think about now, but Thirty Seconds To Mars singer, Oscar-winning actor and Gucci fanboy Jared Leto, once dated Queen of Rom Coms Cameron Diaz, with the pair being an item from 1999 to 2003. The actor once spoke about how he abstained from sex with Diaz during filming of Requiem For A Dream to get into character.

Jake Gyllenhaal and Kirsten Dunst were the cutest up-and-coming couple in Hollywood in the early noughties, dating for two years from 2002 onwards. The pair broke up suddenly, but have supposedly remained friends - unlike Gyllenhaal's other famous ex, Taylor Swift.

Before she was married to That 70s Show co-star Ashton Kutcher, Mila Kunis was in an 8-year relationship with child star Macauley Culkin. Pretty weird, right? The pair dated from 2001, when Culkin was noticeably absent from the spotlight, and Kunis' career had stalled, but when her star rose, the couple split.

Tom Cruise dated similarly surnamed actress Penelope Cruz in 2001-2004, after the two starred in Vanilla Sky together. The pair dated for three years, with Cruise reportedly devastated by their break-up. Scientology was apparently to blame, with Cruz saying it was the 'third wheel' in their relationship.

They're both happily married with children now, but in 2003, Keira Knightley and Jamie Dornan were Britain's coolest new acting couple. While Knightley's career was on the rise, Dornan's had barely taken off, and was still mostly known for being a Calvin Klein model. The two called it quits in 2005, with Knightley apparently devastated by the split.

Colin Farrell and Britney Spears never confirmed a relationship, but that didn't stop them getting flirty on the red carpet for his 2003 film 'The Recruit'. It was the height of Farrell's fame (or infamy, depending on how you look at it), and he was linked to several women at the same time, including Lindsay Lohan.