Notes don't sync with iphone and mountain lion

I upgraded to mountain lion and I cannot get my notes to sync for the life of me. So now I have notes on my iphone and separate notes on my computer. They never sync, so they are virtually worthless. What the heck happened? I don't use iCloud. In the past, I just clicked sync and the notes would be the same on the computer and iphone. Simple. How can I fix this??