So she thoroughly taught him that one cannot take pleasure without giving pleasure, and that every gesture, every caress, every touch, every glance, every last bit of the body has its secret, which brings happiness to the person who knows how to wake it. She taught him that after a celebration of love the lovers should not part without admiring each other, without being conquered or having conquered, so that neither is bleak or glutted or has the bad feeling of being used or misused.
If you've treated your girlfriend without respect, taken advantage of her, or cheated on her, your actions have taught her that she has no value. Needless to say, this is a serious, serious injury. If you don't try to make it right, she might start to believe the lie you've told her and spend the rest of her life thinking she deserves poor treatment.