Thanks, ya'll.
He was a shelter cat. When I worked at the shelter he was there and I was asked to foster him because he wasn't acclimating to the shelter. So I took him home. I did not want a third cat. But as they do, he picked us as his family and so it went. I have been very blessed to share a home with this sensitive soul. He is the gentle boy. He's probably around 17-18 years old. It's time.
Now I'm crying. Ack. I guess it's to be expected.