Harry and Barbara Cooper have been married 72 years and are now telling the secrets to a long happy marriage.

‘It’s a give-and-take situation,” said Harry, as Barbara, giggled. “I give, and she takes.”

This is an unconventional showcase for any elderly couple in their retirement home, but a typical day for two of the oldest bloggers in Los Angeles, California. Harry recently turned 98. Barbara is 93. The Coopers rely on their granddaughters to videotape their chat, which is later posted on their blog, “The OGs” (short for Original Grandparents).

Harry and Barbara have become an internet sensation, attracting thousands of fans since their blog debuted in late 2008. Their grandchildren helped them launch the OG blog as a way for them to share their wisdom, humor and relationship with the rest of the world.

When most people their age shy away from the mysteries of the Internet, the pair boasts 1,900 Facebook fans. Barbara, whose dark hair has turned to a wispy white, also tweets and posts restaurant reviews on Yelp.

But perhaps what’s most fascinating for readers isn’t the couple’s ease with the Web, but it’s the strength of their marriage. At a time when statistics show every other marriage ending in divorce in the U.S., Harry and Barbara have proved a relationship can last a very long time.

Click here to read the rest of Harry and Barbara’s amazing story.