Jay McInerney, the ex-boyfriend of John Edwards' mistress Rielle Hunter speaks out

"I think he has some more explaining to do," McInerney told Extra in response to Edwards' admission of his affair with Hunter.

"It seemed like a very half-a--ed confession," he said. "I think it was unchivalrous of him to basically say that he wasn't in love with her."

In an interview on Friday, Edwards claimed the affair occurred in 2006 and denied fathering Hunter's baby girl. Hunter, who did not list a father on the infant's birth certificate, has refused a paternity test.

McInerney added, "On the other hand, the sooner this is all behind us, the better."

"[I was] kind of fascinated by her and her friends," he said. "I saw them as a tribe that I wanted to study."

The book, he explained, "is about a group of girls, five or six friends, coming to New York and conquering or failing to conquer the city."

McInerney described Hunter as "a wonderful girl.

"She has a good heart and she's a good person," he said. "I still wish her well."

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