MUMBAI - Celebrated author Chetan Bagat says his next book is quite challenging, as it is a love story of a rural boy and an urban girl. His new novella will hit the stands in October. "My next novel is out and out love story. It's about a rural boy and an urban girl. First time I am trying to explore a semi-rural setting in India. It is quite a challenge to write a novel in English about a rural boy," Bhagat, who has so far set his novels....