If people understood the true purpose of chastity, they would see that it has nothing to do with fear or prudishness. Nor is it a repression of sexual desires. Rather, chastity is an exercise of the will, to choose what is good, the greatest of all that is good. It is a refusal to allow the desire for pleasure to displace the call to love. Pleasure is not a bad thing, but when a person pursues enjoyment at the expense of another, love is abandoned.
~ Theology of the Body