Absolutely unequal, do you mean! Some are sensual, more cerebral, some make love three times a day when others just once a month. No abnormalities in there. The only criterion that exists in terms of desire is: is there or not suffering? If there is suffering, we must act. If not, is that everything is in order.
The desire is built in childhood
For Freud, adult sexuality, genital, is built in childhood from two phases of development called oral and anal. Orality described as “cannibalistic” based on the pleasure of the mouth: suck, suck. The anality results from the discovery of controlling their sphincters: the child realizes that he may gleefully hold or conversely releasing his productions bowel. And concludes that it can be satisfied, either actively or passively. Infantile sexuality is essentially autoerotic, centered on the true self.
Moreover, according to Freud, it is “perverse”, plural, because the child uses whatever is at hand to do good. Desire, “libido”, has a sexual purpose, but not only. This is it, indeed, gives us the desire to understand the world, to turn to life. Sexual desire for each other is evolving, particularly at the time of the Oedipus complex, where the child longs for the parent of the opposite sex, while feeling guilty that momentum. This ever-present sense of guilt about sexuality as a potential reservoir of neuroses and moral difficulties. In fact, one does not abandon infantile sexuality to enter triumphantly into the era of mature sex. It remains all his life depends on his emotions of children. Hence, according to psychoanalysts, all aberrations and complications of adult desire.