It is very difficult to learn to love. If an object of fascination or some kind of dream or promise is presented to you, you might fall in love. But it is very hard to love if it means purely giving love without expecting anything in return. We can only fall in love if we think our expectations will be fulfilled. In most of our love affairs, our love is conditional. It is more of a business deal than actual love.
From “Planting the Moon of Bodhi in Your Heart” in Volume Two of The Profound Treasury of the Ocean of Dharma by Chögyam Trungpa, pages 97–98