While love is a human phenomenon by its very nature, the humanness of sex is only the result of a developmental process and progressive maturation. To a mature person the partner is not a "sex object" but another unique person. Sex is devalued as much inasmuch as it is dehumanized.
The goal of sex is to reduce sexual tensions. In a society where sex has lost its imperative of procreation, living a sexual life is healthy and does not demand monogamy or love.