They say affairs are the easiest way to kill a marriage, but how long before past trysts no longer matter? Antonio, a former military officer in Naples, Italy, divorced his wife in 2011 after finding letters his wife had written to a lover he had never known about. The twist? The man was 99 years old, his wife was 96 years old, and they were married for 77 years.

Antonio’s wife, Rosa, had corresponded with her lover over sixty years earlier, and Antonio found the letters in a drawer. The split of the couple put a strain on the family they had built over the years, including five children and twelve grandchildren. As of the time of their divorce, they became the oldest couple in the world to get divorced. The title had previously been held by a British couple who divorced at the age of 98.