By the autumn of 1682, Charles II's enthusiasm for female companionship had noticeably diminished, despite his lifelong appreciation for such relationships. His affair with the Duchess of Portsmouth, who was significantly younger than him, illustrates the inevitable challenges that arise as one's physical vitality wanes with age. The dynamic of their relationship highlights the imbalance often experienced when an older man partners with a younger woman.

Samuel Pepys’ observations in his diary further emphasize this point, noting that while the king appeared tired and disinterested during council meetings, Madame Louise seemed to thrive, staying lively and energetic. This contrast reveals not only the toll of time on Charles but also the different levels of vitality between him and his much younger partner, underscoring the complexities of their union as he aged.