Stephen Covey says that there are six types of relationships, and you can think of them as personal business or even biological animalistic relationships.
How do these feelings inform the key themes of the poem, some themes I picked up on were desire, sensuality, destruction, and insanity, faithfulness, and infidelity.
It seems strange even to myself, when I have described a man who was cruel, selfish, brutal and sensual, to say that he was a great idealist. The fact remains.