Regardless of the gender of the highest wage earner, the balance of power in the relationship will suffer if the higher earner uses control of the purse strings as a system of reward and punishment. It will also suffer if the lower earner takes a chippy, haughty attitude to spending money they haven't actually generated themselves.

The quote by Marian Keyes highlights the delicate balance of power in relationships when it comes to money and earning. It suggests that regardless of whether the highest wage earner is a man or a woman, problems arise if the person earning more uses financial control as a way to reward or punish their partner. This kind of behavior can create an unhealthy dynamic where money becomes a tool of manipulation rather than a shared resource.

The quote also points out the impact of attitude from the partner who earns less. If this person adopts a chippy or haughty stance toward spending money they haven’t personally earned, it can create resentment and tension. This attitude can undermine respect and cooperation, making the financial relationship between partners strained and contentious.

Marian Keyes is emphasizing that the power dynamic in relationships should not be tied to money alone. Instead, there should be mutual respect and trust around financial decisions, regardless of income differences. The quote encourages couples to avoid letting money become a weapon or a source of conflict, promoting instead a more equal and understanding approach to managing shared resources.

Overall, the origin of this quote comes from Marian Keyes’s observations on how money management influences relationships. Her insight calls attention to the emotional and psychological impact that money control and attitudes toward spending can have, advocating for balance and fairness rather than control or resentment.