2. Angelina Jolie & Brad Pitt

This might be the mother of all on-set romances. This superstar couple met while playing husband and wife in 2005’s Mr. and Mrs. Smith. Brad was actually married to Jennifer Aniston at the time (whoops) but the two decided to call it quits soon after. Brangelina’s first child, Shiloh, was born in 2006! The two have become Hollywood’s power couple and they’re not going anywhere anytime soon!