The desire of being seen by somebody else reveals the intention of avoiding the recognition of the personal shapelessness.
As long as we are unseen, it is the risk of sinking into a sort of darkness which means the loss of any precise form. Being lonely, even the personal name becomes meaningless.
The lonely people do not actually retreat into themselves, but let themselves to abide by outer principles of life with have a weak link with their person. The loneliness is often assumed for the sake of a general cause. It may impose them a shape and also a meaning of life, but it cannot be a personal shape or meaning.
Differently, a foreign eye is hoped to take us into the image it makes about us. The experience proves that such images are often wrong, but a mistaken shape is still a shape and it somehow belongs to us.