Thanks, everyone. Of course, what I posted wasn't the whole story about last evening. First, to avoid any confusion, note that my three "kids" are 19, 24 and 27. So the convo last night ended when the oldest two came home from work (they all still live at home, and the youngest had to work last night). My wife quickly went into the washroom to compose herself, then afterward she went out and got pizza for supper, and the four of us spent a rather normal suppertime. After doing the dishes, the rest of the evening was also pretty normal, including my wife and I sitting on the couch watching TV with a couple of the kids, and she was even sitting right next to me, not apart from me.
As we were going to bed, we kissed each other, hugged, and said "I Love You" to each other (I started), and then as usual, I rolled over facing away from her and tried to go to sleep. But within a very few minutes, I was thinking about everything that had happened, and everything that had been said, and the sadness of possibly losing her, and I started crying. I tried to cry silently at first, but very shortly I was sobbing, and shaking the bed a bit. Then, she moved over close to me, put her arm around me, and comforted me. That's when the dam burst and I sobbed uncontrollably for a long time. And she was consoling me the whole time. Afterwards, we lay in each others' arms for a while, just being together and caressing each other. So that was a rather unexpected ending to a very strange day...