(((((chicory))))). I'm so proud of you for pressing on. I see nothing slimy in reading his mail. He won't talk to you, you're worried. He's under your roof and is exhibiting strange behavior. What choice did it leave you? I think his behavior was a way to guilt you, to make you blame yourself and take the focus off him and his behaviors.
He has been contributing nothing to the household. Not even pleasant company. He doesn't help with the chores. He doesn't help with the finances. He has to know he has been cut some major slack and kindness. Now it's his time to accept some responsibility for his own self.
Much love to you, darling!
Lenina