All I can say is that I hope this horrid story helps someone that may be in the same type of relationship, to see the signs and get out!
No.
I'm not buying that at all.
I'm also not buying that nobody knew he lied like a rug. Anybody who has even a passing relationship with another human being can detect if someone is lying, and he told whoppers.
I'm thinking that his plan was to kill her when he got her to NC so the families would be far removed from the situation. However, I'm thinking that she found out about something and he had to do it right away. Maybe she discovered a premeditated plan to kill her, or a girlfriend (or boyfriend) in NC. Who knows?
I think he confessed because he doesn't want any more snooping into his background. There's something there that is humiliating and he doesn't want the whole world to know.
That alias and that post office box......