Secret of Tantra - Silvio Wirth and Mara Fricke-Wirth
Silvio and Mara have been on the tantric path for many years and during this time have gathered experience in a variety of areas. Both of them have devoted themselves not only to traditional, Indian Tantra and tantric Vajrayana Buddhismus, particularly as it is taught in Tibet, but have also gained experience in western, erotic-therapeutic Tantra, also called Neo-Tantra.
Their systematically built-up "integral Tantra" offers approaches for people who wish to grow and to continue developing the various facets of their personhood.
Silvio's particular point of interest is "polyamorie", with which he was so occupied that he wrote a book about it.online