I think you should have been more clever about getting him to confess. Like, ask him to meet you in person while wearing a wire and say that you forgave him for taping you and all that stuff, then buy him dinner or something. The rape charge wouldn't hold up in court since you were over 18 at the time iirc, but it's easier to get someone to talk about criminal activity if you pretend to be cool with it and act casual and butter him up. He probably wouldn't suspect you'd have thought all that through due to your autism either, and telling him your newfound faith taught you to forgive would make it more believable.