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Le Studio Photography
Christina & Tarek El Moussa
The home improvement gurus rose to prominence as married business partners on Flip or Flop. They split in 2016, and have since documented the hardships of co-parenting and working with one's ex on the HGTV series.
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Jason Merritt/Getty Images
Naomi Watts & Liev Schreiber
These exes were together for 11 years. They later reunited for the film Chuck.
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Universal Pictures
Amanda Seyfried & Dominic Cooper
The two actors met on the set of the first Mamma Mia film and dated after for about three years. They reunited on Mamma Mia! Here We Go Again and remained amicable throughout all the potential awkwardness.