They worry about love. The lovers live for the day, it's the best they can do, it's all they know. They're going away all the time, all the time, going somewhere else. They hope, not for anything in particular, they just hope. They know that whatever it is they will not find it.
Love is the perpetual deferment, always the next step, the other, the other.
The lovers are the insatiable ones, the ones who must always, fortunately, be alone. The lovers are the serpent in the story. They have snakes instead of arms. The veins in their necks swell like snakes too, suffocating them. The lovers can't sleep because if they do the worms ear them.