It may be a cliché, but it seems clear to me that love remains long after most other parts of the brain and personality disappear.
How does that song from the movie Camelot go? “Don’t let it be forgot that once there was a spot, for one brief shining moment, that was known as Camelot.” Camelot died because human passions went haywire. Our Camelot died because of Alzheimer’s.
As time passes in our relationship, we realize exceptionality or even survival requires more than the loving touch of a power beyond our knowing. Relationships are what we work to make them.