The sweetest couple

My parents will be celebrating their 70th third wedding and anniversary in a couple weeks. When I brought him their dinner this evening , They asked me if I knew how many years he had been married. I pretended for a couple moments trying to think of it but of course I knew right away. They are the only couple in my knowledge that has been married as long. They are so sweet together. Always looking after one another and showing their deep love and respect every moment.