Jeff Bezos wasn't alone when he founded the online retail giant Amazon. His wife, MacKenzie, was there for the whole journey. Bloomberg estimates Bezos is worth $127 billion— making him the richest person in history. MacKenzie and Jeff first met at investment management firm D.E. Shaw. Bezos joked, "I think my wife is resourceful, smart, brainy, and hot." He said all day at work he would hear her "fabulous laugh." They were engaged within three months, and married within six.