It is the noticer. It is the being, just like you, just across from you. It is the being who, you can tell by just looking, like looking in a mirror, has the same kind of electric circuitry as yourself. You can love that being of the other as much as you love yourself. When that being is a child, you can love her more than yourself.
Beings do a better job of loving each other than minds.
Go have a revealing conversation with your father, mother, brother, sister, or any important earlier relation. This gives you completion as well as practice in renewal. This helps you finish incomplete situations from the past so you can begin living in the present, being present to each other, and living toward the future. This opens up the possibility of working together, in communication with each other, in agreement about what you are both dedicated to accomplishing. You feel helped by each other, grateful to each other, willing to acknowledge each other, and capable of bringing about results in the world together.