If we're talking about 'long game' relationships, Mila Kunis and Ashton Kutcher are the perfect example. They met all the way back in 1998 when Kunis was 14 years old, Kutcher was 19 years old, and they were both starring in comedy sitcom, That 70s Show. The two of them spent eight years on the show, where they described their friendship as more of a brother-sister bond.
It wasn't until 2012, a full 14 years after their first meeting, that Kunis and Kutcher finally got together. Things moved fast once they eventually got their relationship off the ground (we guess it helps when you've already known each other for so many years) - the couple got engaged in 2014 and were married in 2015. They now share two children: a daughter, Wyatt, born in 2014, and a son, Dimitri, born in 2016.