Man, I am so sorry this is your situation. I won’t pretend to really know what advice to give you, other than you should contact adult protective services and see if they can do anything since you are a vulnerable person (aka disabled).
Again, I don’t know shit from fuck, but that’s where I would start. Idk if the cops would take the threat seriously or not, but you might be able to file a restraining order.
Idk, he looks like a perfectly attractive man, in my opinion.