Last evening I began a course called "Theology of Romantic Love." The class is designed to explore how contemporary conceptions of 'love' influence the way we think about the love of God: "With what kind(s) of love does God love us? With what kind(s) of love ought we then to love God and one another?" (from the syllabus)
In the first class we explored various relational dynamics implicit in our concepts of love. This led to an interesting insight for Trinitarian Theology. I've designed a little figure.