According to Béla von Brandenstein’s ontology, love represents a complex relationship of being that encompasses several levels or dimensions: 1) The trinitarian unity of love subject, love act and love object; 2) The trinitarian unity of love giver, love gift and love receiver; 3) The unity of the dynamic-dialectical circle of love; 4) The trinitarian unity of self-affirmation, self-illumination and self-unification in love. It will be shown that these structures of love can be related to the trinitarian basic structure of being.