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Angelina Jolie, Brad Pitt, Ryan Reynolds, Blake Lively, Ashton Kutcher, Mila Kunis

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There's nothing better than watching some of our favorite on-screen couples take their romance off-screen.

This year alone we've seen a few co-stars get cozy after working together on different projects. For example, one of the biggest love stories of the year: Blake Shelton and Gwen Stefani. After coaching on The Voice together, the pair made their love official in October 2015 and have been going strong ever since.

Then there's the Game of Thrones co-stars and exes, Kit Harington and Rose Leslie, who rekindled their romance in January, and Chicago P.D. actors Sophia Bush and Jesse Lee Soffer who were spotted getting lovey-dovey again in September. We obviously can't forget about Miley Cyrus and Liam Hemsworth, too! They got engaged shortly after co-starring in 2010's The Last Song, broke things off in 2013 and have recently gotten back together.

We also have the long-term couples who started off years ago. Angelina Jolie and Brad Pitt began dating in 2005 after filming Mr. and Mrs. Smith, while Ryan Reynolds and Blake Lively took their romance to the next level in 2010 after working on the Green LanternMila Kunis and Ashton Kutcher starred in That '70s Show Together for 8 years, from 1998 to 2006, before they began dating in 2012, married in 2014 and welcomed a baby girl into the world shortly thereafter.

Of course, there's also the couples that never made it: Ryan Gosling and Rachel McAdams after The Notebook, Rob Pattinson and Kristen Stewart after Twilight, Rachel Bilson and Adam Brody after The O.C., and so on and so forth.

Check out all of the co-stars who turned into couples in the gallery below!