35 It is, alas, true that the sin of Adam has caused a deep disturbance in our corporal faculties and our passions, so that they wish to gain control of the life of the senses and even of the spirit, obscuring our reason and weakening our will. But Christ's grace is given us, especially by the sacraments, to help us to keep our bodies in subjection and to live by the spirit. The virtue of chastity does not mean that we are insensible to the urge of concupiscence, but that we subordinate it to reason and the law of grace, by striving wholeheartedly after what is noblest in human and Christian life.
Source: Sacra Virginitas (Vatican.va)