made you fall so hard? >> he was just the most thoughtful person. he was just comforting. and i just couldn't wait to the always just be around him. >> did you still feel a little guilty? >> oh, yes. >> but dianne said there were already issues in her marriage. >> i just thought if i'm doing this, my marriage is definitely already over. >> a few months after the affair began, she decided it was time to tell her husband she wanted a divorce. >> i remember just saying we need to talk. nobody ever wants to hear that. and he looked at me. he said, are you having an affair? >> wow. >> and i said no. >> why didn't you just be honest at that point?