bestselling contemporary romance novel by Chetan Bhagat, published by Rupa Publications. The story follows Madhav Jha, a boy from rural Bihar who earns admission to an elite college in Delhi. There he meets Riya Somani, a wealthy and independent young woman. As their friendship deepens, Madhav struggles to define their relationship, leading to the idea of being a "half girlfriend." The novel explores love, friendship, ambition, language barriers, and social class differences in modern India.