You literally never know how a marriage will shake out. Many singles are advised to be extremely careful about whom they marry because that is the most important choice they’ll ever make in their life. But marrying someone upstanding, attractive, hard working, and happy doesn’t guarantee that it’s all going to work out for both of you in the end. The dynamics of a relationship come to a full 180 once you wake up one day and are bound together by law. Your partnership might have been fun and fancy free when it was merely a relationship, but once the excrement hits the fan, it’s all gloom and doom.
The relationship doesn’t even really have to change for things to go completely awry. Every monogamous relationship comprises two people with their own interiority and emotional state that can’t be fixed by merely jumping the broom and running off into the sunset.