After spending the greater part of the last three hours listening to younger folks discussing their relationships, I have learned that being old is good. We know what matters. And, frankly, very little does when dealing with relationships. What matters is the respect, love, and support you give and receive. What doesn't matter is what's for supper, what the in-laws are doing, how a friend is living, or where you go on vacation. These are small potatoes and, frankly, won't even matter in a day, week or month.
What does matter?
Being told you are important by the other person taking the time to look at you when you speak.
Having a meal together where you share the day's news.
Having time alone to think.
Listening to each other.
Watching "Poirot" together and trying to figure out the murderer.
Letting the other person sleep in once and while.
In short, consideration, thoughtfulness, kindness, respect, and concern all make life with a partner worth living. I don't know when I figured this out. Judging from all the pain I have seen today, I am glad I did!