This quote makes me want to write:
Love is the overflow of joy–in God! It is not duty for duty’s sake or right for right’s sake. It is not a resolute abandoning of one’s own good with a view solely to the good of the other person. It is first a deeply satisfying experience of the fullness of God’s grace, and then a doubly satisfying experience of sharing that grace with another person.
-John Piper, Desiring God