"It is possible to have sex and not be making love. The one-night hook-up after four mojitos comes to mind. It is also possible to make love and be having sex. Sometimes having the raunchiest, nastiest sex is a supreme act of love because when you love someone so much you can share that fantasy about your fourth grade teacher Miss Canfield, the class trip to the zoo, and the zebra incident, you’re displaying a lot of trust. And it is possible to be making love and not having sex, technically speaking, just by sharing a look, a smile, a touch."

— Brian Alexander [1], author of American Unzipped: In Search of Sex and Satisfaction

Source [2]