The "Lover's I Ching" and "Symbols of Love" both by Stephen Karcher are amazing wonderful clear and revealing books. I especially like finding out when you have a moment that is a focus-type (my word. the review mentions "22 models of relationships") of relationship, a more powerful time.
Stephen Karcher's I Ching translation (the big one) has supplanted other versions I have used in my (since 1967) history of using the I Ching for my life. One thing to notice is he extracts the reality whivhis the positivism out of the time. And he links you to the original Chinese. This helps me to see when one hexagram is using the same concept, the same word, as another hexagram.

I have a question. Are these books the same? What is the difference? I haven't seen the black fuzzy one for years.(Lover's I Ching, Hardcover. PUBLISHERS: it should come in a box. imho)

To add to the editorial review of this one, he has had some people who work with relationships add interesting material to this book (Symbols of Love), to help you think through the issues of the time, pictured in the hexagram and echoed by what you cast.