1) Andre Agassi and Steffi Graf
Agassi was this extremely flamboyant individual who sported crazy hairstyles and had a violent temper. (Tennis Romances)
Steffi Graf was a cool and calm individual who had a pleasant and charming nature which won over the tennis fraternity. So I guess opposites do attract!
They traveled the world together for the best part of ten years and finally decided to marry in 2001.
They currently have two children in Las Vegas and have proved that some love stories do have a happy ending.