Katharine Hepburn and Spencer Tracy - Spencer Tracy famously remained married to another woman throughout his relationship with Katharine Hepburn. To this day, their relationship is one of the Hollywood's most legendary love affairs.
Lauren Bacall "was an unknown 19 year old, and Humphrey Bogart was a 45 year old movie star when they met in Hollywood in during the filming of To Have and Have Not (Bacall's film debut). Bogart was instantly smitten.and their romance began to blossom.
Mila Kunis Photos - Ashton Kutcher and Mila Kunis look on from the sidelines before the game between the Chicago Bears and the Pittsburgh Steelers on September 2013 at Heinz Field in Pittsburgh, Pennsylvania. - Mila Kunis Photos - 1942 of 6004
Lucille Ball and Desi Arnaz - TV's pioneering couple. As producer of "I Love Lucy" Desi Arnaz was responsible for transforming Lucy from former movie star/glamour girl to comic genius and the Queen of Television.