16 Answers

Trust.......

communication, love and trust......

Understanding

She's still my best friend

Being with your soul mate is the first step... the rest falls into place.

Tolerance, tolerance and more tolerance and when you can't tolerate him/her any longer bugger off on your own for a few days, weeks, months, or years.

All of the above. An iron fist won't hurt either. JUST KIDDING.

Separate residences.

love love !! well its nearly bedtime in Scotland .Are you ready dear ! Neigh got to put my make up on  .Before your ready to saddle up, "Hi ho Silver.

As many miles or kilometers you can get, lol. Trust, Loyalty,and Honesty as well as friendship.

Living as far apart as possible works for me.

Going overseas alone works for me.

Going on extended trips within Australia alone works for me.

Her doing likewise works for both of us.

Set your common familial goals and be sure they're achievable.  Promising your spouse the world would not necessarily be realistic, for example.  Communicate your goals to each other every now and then and evaluate them as well.  Try to beat these moderate goals and congratulate each other often regarding achievements.  Couples that have common goals tend to be together much much longer. 

P.S. for you guys, wanting sex twice a day every day is not a realistic goal, especially at age 50.

Do things with each other!! I have had several orchids myself, even built my wife a greenhouse to keep them in. She has 3 antique John Deere tractors of her own.

Remembering that the other partner has a life of his/her own.

They are not simply an extension of your life.

Well things are a heck of a lot better around my home since I got rid of the louse uh spouse.