Ossie Davis and Ruby Dee
Married: 1948 – Feb. 4, 2005 (his death)
Duration: 57 years
How They Met: The famous actors met while co-starring in the 1946 Broadway play Jeb.
Barack and Michelle Obama
Married: 1992 – Present
Duration: 21 years
How They Met: According to The Washington Post, the future president and first lady of the United States met when she was assigned to mentor him while they were associates at the Chicago law firm Sidley Austin.