SIOUX FALLS, S.D. (KELO) — Don and Marilyn Barnett of Sioux Falls were featured on CBS Evening News’ “On The Road with Steve Hartman” for Valentine’s Day.

The story is below:

In less time than it takes to make a cup of tea…

…I will explain the secret of a long and happy marriage – as told to me by 94-year-old Don Barnett and his 93-year-old wife Marilyn of Sioux Falls, South Dakota.

Their public displays of affection made possible, they say, by their private nightly ritual.

“It’s very simple and it’s very easy to do,” said Don.

“We wouldn’t go to sleep without that,” said Marilyn.

It happens….

“Want a song?” said Don.

…right before bed.

“Sure!” said Marilyn.

Don sits down beside his bride of 68 years…and starts to sing.

“I just look forward to it.  And he has a beautiful voice,” said Marilyn.

They started doing this about 50 years ago.

“And I discovered a couple of things.  First of all, it pleased her.  And secondly, it calmed us.  And if we had a disagreement or something before, it was gone by the time we went to sleep,” said Don.

A magic musical elixir…

“Yep, you got it,” said Don.

…that their son Doug says happens without fail.

Steve: Whether they’re here, in a hotel room, or in the hospital. 

Don: Doesn’t matter.  I’m not aware that they ever miss it.

Last month, Marilyn fell and broke her hip.  And sure enough, her nightly serenade continued – without skipping a beat. 

Don: When you sing to your spouse, she realizes that you really care enough to go out of your way – rather than just say, “Goodnight, honey!”

This Valentine’s weekend, couples will be searching for just the right words to show their love – but for Don and Marilyn there’s nothing to say – that can’t be sung.