People fall in love at the moments in their lives when they are most terrorized by possibilities.
What Rousseau alerts us to here is the passion for obstacles. And this leads me to the next assertion: The first relationship is not with objects but with obstacles. Or to put it another way, from the other end, so to speak: People fall in love at the moments in their lives when they are most terrorized by possibilities. In order to fall in love with someone they must be perceived to be an obstacle, a necessary obstacle.
Adam Phillips - 'On Kissing, Tickling, and Being Bored: Psychoanalytic Essays on the Unexamined Life' - in the 'Looking at Obstacles' chapter