Rabash, “The Generality of Man”: “Now let’s talk about the love of the Creator. First a person has to know that love is acquired by actions, by giving his friend presents, so each present that he gives his friend is like an arrow and a ball, which makes a hole in his friend’s heart. Even if his friend’s heart is like stone, still every ball makes a hole in it, and the many holes create a space in it. Then the love of the giver of the presents enters that space.
The warmth and love attract the friend’s sparks of love and then an attire of love is woven by the two loves that covers the two. This means that one love revolves and surrounds the two of them and they become one man, since the attire that they are both covered by is one attire. Thus they are both nullified.”
If two people feel mutual love then they mutually complement one another. Each of them is incorporated in the other and then a third party appears between them, the Creator, who testifies for their love and sustains it.
One sided love cannot be sustained for a long time. It takes two who feel some mutual love connection, even if it is in different levels of intensity. If one of them is greater than the other, he descends to the level of the second since it is much more difficult to ascend than to descend. So he creates a special spiritual Partzuf for himself which is his expression on a lower level and by that helps his smaller friend fulfill their mutual love. Thus he helps his friend rise higher each time.
From the 1st part of the Daily Kabbalah Lesson 6/19/13, Writings of Rabash