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Drew Barrymore and Corey Feldman -

Feldman was 18 and Barrymore was 14 when they started dating. Though according to Feldman's memoir, the two went on a date in 1985 when he was 14 and the actress was just 10 years old!

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Liam Neeson and Helen Mirren -

The two met on the set of 'Excalibur' in 1981 and dated for five years. They even lived together at one point!

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Diane Lane and Jon Bon Jovi -

The two dated back in the '80s, when Jon Bon Jovi still had long hair, and Diane Lane wasn't the famous actress she is today.

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Jennifer Love Hewitt and Will Friedle -

The couple dated back in 1997, when they were both 18. This was just before Jennifer Love Hewitt became famous with 'I Know What You Did Last Summer,' which came out in the same year.

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Jennifer Grey and Matthew Broderick -

Before Jennifer Grey's popularity exploded with 'Dirty Dancing,' she dated Matthew Broderick, up until 1987.

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George Clooney and Kelly Preston -

George Clooney and the late Kelly Preston dated from 1987 to 1989.

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Scarlett Johansson and Jack Antonoff -

The two attended the Professional Children’s School in New York City and even went to prom together! The relationship lasted two years.

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Ashton Kutcher and January Jones -

Ashton Kutcher and January Jones dated from 1998 to 2001, before both were known in Hollywood.

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Keira Knightley and Jamie Dornan -

Keira Knightley and Jamie Dornan dated in 2003, when Knightley was not the famous actress she is today, and way before Dornan starred in 'Fifty Shades of Grey.'

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Justin Timberlake and Fergie -

The two dated in 1997, even before NSYNC's first album came out. Justin Timberlake was 16 and Fergie 23 back then.

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Reese Witherspoon and Chris O'Donnell -

Reese Witherspoon and Chris O'Donnell dated back in 1993. The actress was just 16.

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Zooey Deschanel and Jason Schwartzman -

Zooey Deschanel and Jason Schwartzman started dating when they were both 19. They split up in 2005.

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Michael Keaton and Courteney Cox -

The couple dated back in the late '80s, before Courteney Cox became a star on 'Friends.' They eventually split up in 1995.

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Ryan Reynolds and Kristen Johnston -

Ryan Reynolds and Kristen Johnston of '3rd Rock from the Sun' fame dated back in 1999, before Reynolds became the movie star he is today.

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Matthew Morrison and Lea Michele -

Matthew Morrison and Lea Michele dated while working on Broadway, before they both landed roles on the hit TV show 'Glee.'

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Leighton Meester and Sebastian Stan -

The couple started dating in 2008, right at the beginning of 'Gossip Girl,' and before Sebastian Stan starred in movies from the Marvel Cinematic Universe.

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David Gallagher and Megan Fox -

In 2003, the teen heartthrob dated Megan Fox before she become a famous Hollywood bombshell.

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Minka Kelly and Donald Faison -

Minka Kelly and Donald Faison dated before their successful roles in 'Scrubs' and 'Friday Night Lights.'

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Katy Perry and Travie McCoy -

Before global stardom, Katy Perry started dating fellow music artist Travie McCoy in 2006. The two eventually broke up in December 2008.

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Jay Leno and Sharon Osbourne -

The two had a "flingy-wingy," as Osbourne called it, after they met one night in a bar. Needless to say, it didn't last.

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Jessica Biel and Chris Evans -

Jessica Biel and Chris Evans dated on-and-off from 2001 to 2005. Back then, they were nowhere near as famous as they are today.

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Sandra Bullock and Tate Donovan -

The two met on the set of 'Love Potion No. 9' in 1990 and were together up until 1994.

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Jon Hamm and Jennifer Westfeldt -

The two dated back in 1997, before the successes of 'Kissing Jessica Stein' and 'Mad Men.'

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Busy Philipps and Colin Hanks -

Busy Phillips and Colin Hanks met at Loyola Marymount University and dated for a while. They remain friends to this day.

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Matthew Morrison and Kristen Bell -

The two started dating when they were students at New York University, way before the 'Veronica Mars' and 'Glee' days.

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Sarah Jessica Parker and Robert Downey Jr. -

The couple started dating in 1984, way before Iron Man and Carrie Bradshaw. Sarah Jessica Parker and Robert Downey Jr. were just 18 back then.

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Alanis Morissette and Ryan Reynolds -

Ryan Reynolds dated singer Alanis Morissette for quite some time. The Canadian couple were even engaged in 2004, but eventually split up in 2008.

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Juliette Lewis and Brad Pitt -

Brad Pitt has had many romances, and Lewis was one of them. The two dated back in 1989, when he was 26 and she was just 17. The couple broke up in 1993.

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Mila Kunis and Macaulay Culkin -

The two started dating in 2002, when Kunis was not that famous, and the 'Home Alone' star's fame went downhill. The relationship lasted eight years.

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Jennifer Aniston and Tate Donovan -

Jennifer Aniston and Tate Donovan met in 1995 and dated for a few years. The two broke up right before the actor had a guest role on 'Friends' as her character's love interest.

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Ryan Gosling and Sandra Bullock -

Sandra Bullock was already famous when she dated Ryan Gosling back in 2002.

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Jennifer Garner and Scott Foley -

The couple co-starred in 'Felicity' back in 1998 and started dating. They eventually got married in 2000, but it only lasted three years.

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Lisa Kudrow and Conan O'Brien -

Lisa Kudrow and Conan O'Brien met in an improv comedy class and dated briefly, before they became hugely famous.

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Kim Kardashian and Nick Cannon -

The couple dated between 2006 and 2007, just before 'Keeping Up with the Kardashians' became a huge hit.

Source: (Marie Claire)

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