Have you reached your forties and fifties? You feel smug and safe because you are still married? Be careful. You are beginning to feel your age. You have become conscious of age categories when running a marathon or participating in a bicycle race. You have to watch what you eat. For the first time you discover you have gained weight. It happened to me when we had just returned from a week long backpack trip.
Your children are grown. Your bucket list may have too few things crossed off. You may be looking at new sports cars or a trip to Australia. Maybe you are thinking of going back to college. When you read about a big road project that will be completed in 2045, you calculate if you should get excited about that. You begin to wonder if you have passed the midpoint of your life. Do you have less time to live than the time you have already lived?
If you do these things, you will become soul mates and adore each other after 60 years of marriage.