Love is a choice. And for love truly to be love, it must extend to all. Love is never exclusive. Love is given to a spouse, to a parent, to a child, to a friend, to a co-worker, to a stranger. Love is given to God.
Love is given to oneself.
It's never dependent upon a particular object. Love is only love if it is given to all beings. It's a power that radiates in every direction. Just as the sun gives it's heat and light to everything on this planet, love shines upon all that it encounters. That love must extend to all is the great lesson of the biblical book of Jonah.