In e-mails with a male prostitute, Michael Peterson negotiated a paid date for sex and said it would be nothing more than a business transaction.

Peterson, who is accused of killing his wife, went on to say he had a great marriage, according to the messages entered into evidence Monday in his trial.

"Evenings are not great for me anyway; I'm married," Peterson wrote on Sept. 2, 2001. "Very happily married with a dynamite wife. Yes, I know, I know; I'm very bi(sexual) and that's all there is to it."

The man, Brent Wolgamott - previously known only as a college student named "Brad" - testified that he traded e-mails with Peterson to arrange the encounter about three months before Peterson's wife was found dead. Full Story...