No relationship implied. Here is a link concerning middle management: https://www.shrm.org/resourcesandtools/hr-topics/employee-re...

As for the social science of marriage, I don't have a link but recently read in a textbook how marriage satisfaction consistently declines year after year for both partners. With men's satisfaction dropping faster in the first few years with women's overtaking them by year 7 or so.

Here is a chart that is similar to what I am referring to: https://opentextbc.ca/introductiontosociology2ndedition/wp-c...