Steven Spielberg & Kate Capshaw – 29 Years
In 1984, Kate Capshaw and Steven Spielberg collaborated on the Indiana Jones and the Temple of Doom while they were both shooting a movie he directed. She had been working on The Edge of Night, which she eventually gave up to star in his film — they had no idea the picture would alter their lives dramatically.
They got hitched in 1991 and have seven kids, both from prior relationships and as a couple.