A lot of the time I try to stay in the moment, and perhaps this could be looked at as a form of denial. Then I realise there has been a change, and yes, it does make you sad. Hope there are still lots of positive days ahead for you and your oh tuffy.
Really feel for you, Tuffy. I read about things happening to others spouses. When some of those things happened to my husband for the first time, it was frightening until I got used to it. Sadly, you do get used to it. It's one of those sad things which crop up.