When asked whether he wanted his ex-wife to see the interview, Cook said, "I don't think I can avoid that. But I think if she does, what I hope comes of it is that she takes the time to heal herself. And she goes back and remembers that I made a mistake, but that I am that person that she wrote the poems about, that she raved about in magazine articles and anybody who she could get … twist their ear to listen. I am that person today, that I was then."
For much more of Walters' interview with Cook, watch "20/20" Friday at 10 p.m. ET