20 Celebs Who Dated Each Other Before They Were Huge Names In Hollywood

I can't believe Lisa Kudrow and Conan O'Brien were a couple!

Most of us would probably prefer to forget about our exes, but when your ex is a celeb, you might have a hard time escaping their face on movie posters or their voice on the radio.

Here are 20 celebs who dated each other before they were huge names in Hollywood:

1. When they were in high school, Scarlett Johansson and Jack Antonoff went to prom together.

Actor who played Natasha Romanoff in "Black Widow" and music producer

2. Ruby Rose and Lauren Abedini (aka DJ Kittens) dated briefly in 2012.

Ruby and Lauren on red carpets separately

3. When they both 18, Sarah Jessica Parker and Robert Downey Jr. met on the set of Firstborn and moved in together two months later.

Actor who played Carrie Bradshaw on "Sex and the City" and actor who played Tony Stark in "Iron Man" standing very close together

4. Fifteen-year-old Lucy Hale was 13-year-old Kendall Schmidt's first date, and they went horseback riding.

Lucy, holding a tote bag, smiles and waves, while Kendall in a jacket smiles on the Kids' Choice Awards red carpet

5. Halsey and Matty Healy briefly dated in 2015 after meeting at the 1975's concert.

"Without Me" singer and "Somebody Else" singer

6. In the mid-'80s, Lisa Kudrow and Conan O'Brien met in an improv class and briefly dated.

A laughing Lisa is interviewed by a smiling Conan

7. Tobey Maguire and Rashida Jones got together in 1997.

Actor who played Peter Parker in "Spider-Man" and actor who played Ann Perkins on "Parks and Rec"

8. Jennifer Love Hewitt and Will Friedle met through friends and dated briefly in 1996.

Jennifer and Will smiling and holding hands

9. In 2000, 7-year-old Miley Cyrus met 9-year-old Tyler Posey on the set of Doc, and she was his first kiss.

Actor who played Hannah Montana and actor who played Scott McCall on "Teen Wolf"

10. Jennifer Garner and Scott Foley got together when she guest-starred as his character's girlfriend on Felicity in 1998.

Jennifer and Scott standing together and smiling

11. Chris Evans and Jessica Biel dated from 2001 to 2006.

Chris with his arm around Jessica, who has her head on his shoulder, on the red carpet

12. When they were both 19, Jason Schwartzman was Zooey Deschanel's first "real" boyfriend.

Actor who played Jess on "New Girl and actor who played Max Fischer in "Rushmore"

13. Busy Philipps and Colin Hanks dated while they were both students at Loyola Marymount University.

Actor who played Kim Kelly on "Freaks and Geeks" and actor who played Alex Whitman on "Roswell"

14. Demi Lovato and Cody Linley briefly dated from 2007 to 2008.

Demi, with hand on hip, and Cody on the red carpet separately

15. Lea Michele and Matthew Morrison were briefly a couple before they were on Glee together.

Actors who played Mr Schue and Rachel on "Glee"

16. Leighton Meester and Sebastian Stan met in 2007 when he became a recurring guest star on Gossip Girl, and started dating in 2008.

Leighton and Sebastian standing together and smiling

17. Ashton Kutcher and January Jones started dating in 1991, around the time she was just getting started in LA.

Actor who played  Michael Kelso on "That '70s Show" and actor who played Betty Draper on "Mad Men"

18. In 2003, Jamie Dornan and Keira Knightley met at an Asprey campaign shoot and became a couple soon after.

Actor who played Christian Grey in "50 Shades of Gray" and actor who played Elizabeth Swan in "Pirates of the Caribbean" standing together

19. While they were students at NYU, Matthew Morrison and Kristen Bell briefly dated.

Matthew and Kristen standing together and smiling

20. And finally, Thandiwe Newton and Brad Pitt met on the set of Interview With a Vampire and started a relationship in 1994.

Actor who played Mauve Millay on "Westworld" and actor who played Tyler Durden in "Fight Club"