I dislike the term 'failed relationship'; it doesn't cover how the relationship changed you, how you grew from it, only that it ended. It sets up a binary understanding of relationships with the 'goal' being longevity. Either you fail or you stay together forever.

In broad terms the understanding of relationships seems to be shifting. People are getting married later in life, having fewer sexual partners, and divorcing far less. I have a hunch that the number of children of divorce has impacted this as well.

Interestingly It's been reported that nationally the number of births decreased in 2020. At the beginning of COVID19 it was thought that all the time at home with your S.O. would lead to an increased birth rate similar to natural disasters or large events. In actuality, for many that much time with their S.O. turned into an S.O.S.