First, each partner has to be aware of his or her own sexual needs, and be able and willing to express those needs directly. This implies a certain level of sexual experience or comfort along with emotional maturity. The biological urge to procreate. While there may be a slim glimmer of truth to that, I think it depends more on individual differences. So a particular woman may be naturally passionate with a man simply from the sexual urge and with no other justifications or rationalizations.
Biology plays a large part in passion.
Someone whose hormones are depleted is surely likely to be less passionate than someone whose testosterone is raging. In my opinion, the base of sexual passion is comprised of strong attraction, lust and sex drive. These primal aspects are largely influenced by numerous other factors, which determine how much of the passion, if any, will be sustained after the initial infatuation. A few years down the road of a committed relationship, we tend to shift our priorities and let our sex lives slip into a low-maintenance routine. There is nothing wrong with re-evaluating one's priorities, but routine is a killer of passion.