Elizabeth Edwards: 'I Knew I Could No Longer Be John's Wife'

Last year, Elizabeth told Lauer that despite her husband's affair, she still believed she married a "marvelous man." Today Edwards still believes that, but adds, "I think he changed over time. I think it was sort of hard for me to see it or admit it for a very long time. But he changed. Maybe we all change over time. And he's no longer the person who I married. I still admire an enormous number of things about him. The things he cares about are things I think are important."

Lauer then asked Edwards whether she watched John's mistress, Rielle Hunter, on "Oprah," where she spilled all the details about their affair.

"At first, I didn't watch it. And then I thought, 'Well, that's silly,'" said Elizabeth. "I didn't watch the whole thing. But I did watch some of it. I still think this person is so completely unlike me that it's hard to imagine the same person could marry me and be attracted to that woman as well."

See more of Elizabeth's interview and find out if she and John are continuing to co-parent their three children.