“While the concept has roots in folklore and popular culture, many people relate to it because it captures the feeling that some relationships hold a unique significance in our lives,” marriage therapist and author of The Formula of Desire, Anna Elton, told Cosmopolitan.
Article source: https://www.huffingtonpost.co.uk/entry/invisible-string-theory-explained_uk_6a7aee40e4b0ecad6d3c77c6