"Half Girlfriend" is a romantic novel by Chetan Bhagat that tells the story of Madhav, a young man from a small town in Bihar, who falls in love with Riya, a girl from a wealthy family in New Delhi. The novel explores themes of love, relationships, and social class, as Madhav navigates his feelings for Riya and the challenges that come with their different backgrounds.

The book is a heartwarming and thought-provoking read that delves into the complexities of modern Indian society and the struggles of young people finding their place in the world. With its relatable characters and engaging storyline, "Half Girlfriend" is a must-read for anyone interested in contemporary Indian literature and romance.