Ashton Kutcher and Mila Kunis
Ashton Kutcher and Mila Kunis first met on the set of That 70’s Show in 1998. However, they did not get together for years. Ashton was first married to Demi Moore and Mila was in a long term relationship with Macauly Culkin. When those relationships ended, Ashton and Mila ended up spending more time together, and then officially began dating. They got married in 2015 and have two children together.
Ryan Reynolds and Blake Lively
Blake Lively and Ryan Reynolds met one another while they were filming The Green Lantern in early 2010. At the time, Reynolds was married to Scarlet Johansson, while Lively was dating her Gossip Girl co-star Penn Badgley. Once the two relationships ended, they ended up together, marrying each other in 2012. Lively told Marie Claire: “I knew he would always be my best friend for my whole life. That was the biggest thing to me. I could like him as much as I loved him.” They have three children together.