On one hand the eternal attraction of man towards femininity (cf. Gn. 2:23) frees in him-or perhaps it should free-a gamut of spiritual-corporal desires of an especially personal and “sharing” nature (cf. analysis of the “beginning”), to which a proportionate pyramid of values corresponds. On the other hand, “lust” limits this gamut, obscuring the pyramid of values that marks the perennial attraction of male and female.
John Paul II, Purity of Heart: Reflections on Love and Lust / Pope John Paul II’s Theology of the Body in Simple Language, Vol. 2