Before video-chat and long-distance phone calls, written correspondence was used to exchange meaningful information. The goal was to write about the most important things that had happened since the last letter.
Although the telephone was invented in the mid-19th century, it was only used for long-distance relationships in the 1970s, when the cost of phoning for pleasure instead of just business became affordable.
The next major development in romantic communication was the internet. Email, instant messaging, and video-chatting were affordable for couples to share even the smallest details.
Many couples today do "background Skype" where everyday living comes to the surface and add to a level of intimacy.
A few years ago, I met a woman at a wedding who told me that she pictured marriage like two astronauts floating around in space, tethered together. "You're both so busy and preoccupied that it's easy to drift apart without noticing," she said.
But the post also helped a lot of people. Since writing it, it's generated a staggering amount of thank you emails, and no less than 20 people notified me that it inspired them to end their relationships (or even in a few cases, their marriages).
Sometimes the only thing that can make a relationship successful is ending it at the appropriate time, before it becomes too damaging. And the willingness to do that allows us to establish the necessary boundaries to help ourselves and our partner grow together.