She is zany and eccentric and he is beguiled. Passion is essentially a spiritual quality. It has to do with our soul. And our soul never ages, it only grows. Our bodies age, so it gets harder and harder to stay really sexy.
Younger people have better physical tools.
But we can experience more and more profound intimacy , more profound passion, as we age. True beauty is what shines from within us. Because the spiritual quest is actually for intimacy, that is why we cannot be casual with our sexual expression. Intimacy is necessarily reserved and limited. It has to be nurtured in safety.