Honestly, I don't actually think he is changing too much. At least not at the moment. But I decided to change MY mindset. I'm acting "as if" this is done, I've moved on from heartbreak, and he is someone I am friendly yet detached around. And you know what? In pretending that I am totally comfortable around him, and with this situation... I am becoming that way in actuality. I've got my mental health back, I'm gettin' my groove back, and as soon as I get my body back, I will be unstoppable. ;-)
He never did follow up on the invitation to "chat" recently... and I haven't obsessed over it a bit. If he's not ready, then he's not ready. If it never happens, then it never happens.
He's going to have to live with his choices. He's going to have to send me a big check every month for the next 17 years. The best revenge, so to speak, will be to make him forever question whether he truly made the right call, right?