17. Megan Fox and Brian Austin Green: 13 years
Fox, 33, and Green, 45, met on the set of “Hope & Faith” when she was 18. They became engaged in 2006 and they reportedly split three years later, but then the couple married in 2010. Fox filed for divorce in 2015. But by 2016, the couple was back together. They have three sons, and Fox is a stepmom to Green’s son from a previous relationship.
