I've always liked this quote. I think he was talking about being authentic and not conforming to society or family etc IF that shoes doesn't fit but I do see it can be applied to relationships. You might find my https://marcus17043.medium.com/nonconformists-are-not-rebels-fdacdb633a58 interesting. It touches upon relationship topics toward the end

Anyway, I appreciate how you connected dots between Jung's quotes and relationship advice. Excellent essay, Smillew.