Cherish is not just a vow; it is also a good idea.
More than 25 years into our marriage someone asked Ernest and me who Kim Byham is, and I explained, "Kim Byham is my best friend." Later when we were alone, Ernest said, "I know you are close to Kim and I rejoice in that. But I am surprised that I have never heard you name me as your best friend. You are my best friend."
There was no meanness, no 'gotcha' in his countenance, just gentle, loving vulnerability.