In recent years, there's been something of a cultural shift around re-evaluating what makes an adult a true grown up.
And while there are many ways to approach this conversation, it's not hard to understand why it's happening. After all, the traditional idea of a "real man" or a "real woman" tended to be pretty rigidly defined and has proved harmful for the mental health of many.
So rather than define maturity by the level of emotion people show or the interests they happen to have, it may be more productive to say that someone is grown up when they're willing to accept their responsibilities.
And one strange story of marital strife makes a pretty compelling case for evaluating each other that way.