John and Evie of Minnesota have been married for over 70 years, so they definitely seem to have this whole "relationship" thing down.
According to BuzzFeed, the couple met in 6th grade, and went on their first date when they were 15. The rest is history.
To celebrate their most recent wedding anniversary, the couple's granddaughter Danni made a video of her grandparents revealing their secrets to a happy marriage. Of course, there are the usual things that many happy couples swear by— never going to bed angry, making each other laugh, etc...but things definitely took a turn toward the end of the video. Make sure you watch the whole way through.