Mahatma Gandhi was bisexual and left his wife to live with a German-Jewish bodybuilder, a controversial biography has claimed. The leader of the Indian independence movement is said to have been deeply in love with Hermann Kallenbach. He allegedly told him: 'How completely you have taken possession of my body. This is slavery with a vengeance. Kallenbach was born in Germany but emigrated to South Africa where he became a wealthy architect. Gandhi was working there and Kallenbach became one of his closest disciples. The pair lived together for two years in a house Kallenbach built in South Africa and pledged to give one another 'more love, and yet more love . . . such love as they hope the world has not yet seen. The extraordinary claims were made in a new biography by author Joseph Lelyveld called 'Great Soul: Mahatma Gandhi And His Struggle With India which details the extent of his relationship with Kallenbach like never before. At the age of 13 Gandhi had been married to 14-year-old Kasturbai Makhanji, but after four children together they split in 1908 so he could be with Kallenbach, the book says. At one point he wrote to the German: 'Your portrait (the only one) stands on my mantelpiece in my bedroom. The mantelpiece is opposite to the bed. Although it is not clear why, Gandhi wrote that vaseline and cotton wool were a 'constant reminder of Kallenbach. He nicknamed himself 'Upper House and his lover 'Lower House and he vowed to make Kallenbach promise not to 'look lustfully upon any woman. 'I cannot imagine a thing as ugly as the intercourse of men and women, he later told him. They were separated in 1914 when Gandhi went back to India Kallenbach was not allowed into India because of the First World War, after which they stayed in touch by letter. As late as 1933 he wrote a letter telling of his unending desire and branding his ex-wife 'the most venomous woman I have met. Lelyvelds book goes beyond the myth to paint a very different picture of Gandhis private life and makes astonishing claims about his sexuality. It details how even in his 70s he regularly slept with his 17-year-old great niece Manu and other women but tried to not to become sexually excited. The biography also details one instance in which he forced Manu to walk through a part of the jungle where sexual assaults had in the past taken place just to fetch a pumice stone for him he liked to use to clean his feet. She returned with tears in her eyes but Gandhi just 'cackled and said: 'If some ruffian had carried you off and you had met your death courageously, my heart would have danced with joy. The revelations about Gandhi are likely to be deeply contested by his millions of followers around the world for whom he is revered with almost god-like status. Nobody from the Indian High Commission to Britain was available for comment. Daily Mail