Well, you have a point there....they don't live together!!!
You see, they with them its a policy of Mutually Assured Destruction. They each have the goods on each other. Its what makes their marriage work.
http://www.twincities.com/mld/charlotte/news/special_packages/john_edwards/9122749.htm?1c
Over the years, Edwards has sought advice from Holbrooke; retired Army Gen. Hugh Shelton, former chairman of the Joint Chiefs of Staff; and Sandy Berger, Clinton's national security adviser.
"I met with John in the spring of '01, before 9-11, and at that point he wanted to focus and concentrate on terrorism," said Berger. "He really bore down on that issue and the bioterrorism issue."