20 For this reason, therefore, the Church frequently mourns over her virgins; hence she groans at their scandalous and detestable stories; hence the flower of her virgins is extinguished, the honour and modesty of continency are injured, and all its glory and dignity are profaned. Thus the hostile besieger insinuates himself by his arts; thus by snares that deceive, by secret ways, the devil creeps in. Thus, while virgins wish to be more carefully adorned, and to wander with more liberty, they cease to be virgins, corrupted by a furtive dishonour; widows before they are married, adulterous, not to their husband, but to Christ. In proportion as they had been as virgins destined to great rewards, so will they experience great punishments for the loss of their virginity.
Source: The Treatises of Cyprian (New Advent)