Rielle Hunter says John Edwards' marriage to the late Elizabeth Edwards was damaged before she became involved with the two-time presidential candidate.

"Their marriage was ruined before I got there," she told ABC's 20/20. "Years before I got there."

Reflecting on public perception that John and Elizabeth Edwards had a healthy marriage, she added, "I was disgusted with myself for being in love with a man who was going on national TV with his wife -- and lying."

Elizabeth Edwards passed away after years of struggling with cancer in 2010.

The remarks from Hunter come ahead of the release of her memoir What Really Happened: John Edwards, Our Daughter, and Me.

Reuters reported on the contents of the book earlier this week:

Hunter wrote that Edwards confessed to having the other affairs but that he led her to believe that she was the last.

Hunter blames Elizabeth Edwards for driving John Edwards to cheat. She describes Elizabeth Edwards in unflattering terms, calling her "crazy," "venomous," and a "witch on wheels."

Hunter told 20/20, "I feel for both my daughter and for all the kids involved, the full truth needs to be in the public domain." She added, "Their father's not a demon and their mother's not a saint. And I'm not a home wrecker. We're real human beings. And there is a real dynamic that was going on, good and bad. And we all made mistakes."

The statements from Hunter surface in the wake of the high-profile legal case involving Edwards coming to a close. The AP reported earlier this month:

Federal prosecutors dropped all charges... against John Edwards, triggering criticism that the year-long prosecution of the former presidential candidate was a waste of time and taxpayer money.

After a six-week trial in North Carolina, jurors acquitted Edwards May 31 on one count of accepting illegal campaign contributions and deadlocked on five other felony counts. The judge declared a mistrial.

The U.S. Justice Department said in a court order that it will not seek to retry Edwards on the five unresolved counts.

Below, a look at intriguing revelations from what Hunter had to say about her relationship with Edwards in a 2010 interview with GQ.

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• Love At First Sight?

  "And when they left, my friend went over and asked Tony if that was John Edwards, and he said yes. And my friend turned to me and said, 'See, I told you it was John Edwards.' And then I came over to the table, and I said, 'I can't believe that was John Edwards; he's so hot. He's really got it going on. He's got something unusual about him, and I never would have recognized him.' And Tony said, 'Oh, my God, you should have come over and told him that. He would have loved to have heard that.'"

• An Extraordinary Night

  "We had an extraordinary night, and I did know that this was unlike anything either of us had ever experienced. And as we have all learned, that was accurate! [laughs] He in fact did say to me the first night, 'Falling in love with you could really [screw] up my plans for becoming President.' And of course I said, 'If you want to make God laugh, tell him your plans.'"

• The Oddest Connection He Had Ever Felt

  "Well, what Johnny later told me was, he went to dinner and could not stop thinking about me, like, 'Who was that woman, and why didn't I go over and talk to her?' ... So when he walked around the corner and saw me standing there, he lit up like a Christmas tree. And I thought his reaction when he saw me was just so cute. I mean, he looked like a little kid at Christmas. And I just uttered to him, 'You're so hot.' And he said, 'Why, thank you!' And he almost jumped into my arms. Literally. And um, that's how we met. On the corner of 61st and Park Avenue."

• 'I Had To Sleep With Him'

  "I used to make a joke that I could have helped save the world, but I had to sleep with him. You know? It was kind of like that."

• Falling In Love

  "I fell in love with Johnny ... He called me the next day. We talked on the phone almost every night for four hours. We met on February 21. On February 25—on the phone, from Davenport, Iowa—I fell in love with him. Head over heels in love. I was a goner."

• Here's ... Johnny!

  "Isn't that funny? You know, when I first met him, the first week of our relationship, I said to him, 'For some reason I cannot call you John, it doesn't come out. Could I call you Johnny?' And he said, 'That's my name.' And I didn't know that, but that's his actual birth name."

• Knight In Shining Armor?

  "I had this thing in my head like a lot of women, where you want your man to stand up on a cliff and scream, 'I LOVE HER.' You know, the knight in shining armor. And that wasn't what was going on."

• On Her Relationship Status

  "I am not engaged."

• Why She's Talking Now

  "I feel comfortable talking now, because Johnny went public and made a statement admitting paternity. I didn't feel like I could ever speak until he did that. Because had I spoken, I would have emasculated him. And I could not emasculate him. Also, it is not my desire to teach my daughter that when Mommy's upset with Daddy, you take matters into your own hands and fix Daddy's mistakes. Which I view as one of the biggest problems in all female-and-male relationships."

• Not A Gold Digger

  "I mean, just for starters, I never 'hit on' Johnny. I'm not a predator, I'm not a gold digger, I'm not the stalker. I didn't have any power in that way in our relationship. He held all the power."

• 'The Wrath Of Elizabeth Is A Mighty Wrath'

  "And I believe what happened in his marriage is, he could not go to his wife and say, 'We have an issue.' Because he would be pummeled. So he had a huge fear. Most of his mistakes or errors in judgment were because of his fear of the wrath of Elizabeth. He's allowed himself to be pushed into a lot of things that he wouldn't normally do because of Elizabeth's story line. And the spin that she wants to put out there. He was emasculated. And you know, the wrath of Elizabeth is a mighty wrath."

• 'I Was A Bit Promiscuous'

  "I was never, as it's been reported, a drug addict. The word addiction means inability to stop. I stopped doing drugs in my twenties. As for being promiscuous, I would say that I was a bit promiscuous for about six months. But it was because I was partying, and there were a lot of very good-looking available 20-year-old men around that you'd be partying with, and there was a lot of, you know, hooking up going on."

• A Toxic Relationship

  "[Elizabeth] was in denial about a lot of facts. And I say she was in denial because, you know, their relationship has been dysfunctional and toxic and awful for many, many years. And she was aware of, um, problems and chose to ignore them."

• 'I Don't Really Believe He Was A Politician'

  "Well, I don't really believe he was a politician. I believe his ego and ambition drove him to that field. I believe he's more aligned with being a humanitarian. That suits his true nature. Just like I wasn't a mistress. You know, I'm not a mistress, but I played the role? I believe he played the role of a politician. It's not who he is. Being a politician was a path of transformation for him, I believe. It's not really what he was put on the planet to do."

• Not A 'Home Wrecker'

  "And, well, first of all, infidelity doesn't happen in healthy marriages. The break in the marriage happens before the infidelity. And that break happened, you know, two and a half decades before I got there. So the home was wrecked already. I was not the Home Wrecker."

• Naming Frances Quinn Hunter

  "Her name is Frances Quinn Hunter, and I love the name Frances. Johnny wasn't over the moon about Frances. So I was coming up with names, and Quinn is a name that I loved, and that was the only name that he thought was cool. And so I named her Quinn because Daddy really liked it."

• Was Andrew Young In Love With Edwards?

  "Andrew [Young] was in love with Johnny...In love with him. Beyond. And I believe he loved Johnny more than he loved Cheri. So Johnny was the third person in their relationship. And I'm sure she hates Johnny, because Andrew took a lot of obvious actions that were for Johnny and not for Cheri. But Cheri went along with them. And they both have a way of spinning things. But a lot of their motivation is money."