“Chastity is a form of the virtue of temperance, which controls according to right reason the desire for and use of those things which afford the greatest sensual pleasures.”
Chastity states that sex, our bodies, and our desires are so good that they are sacred, thus they deserve to be respected and revered. Chastity isn’t about saying “no” or making rules—it’s an enormous YES to authentic love.
Theology of the Body is a rich resource that shares this truth in love.