A half girlfriend is a novel by a great writer chetan bhagat. In this novel there is a boy madhav from bihar he is a backward guy who doesnt know about english also he meets and fall in love with a beautiful delhi girl Riya.this girl riya became his half girlfriend for the sake of their friendship by the way this is not possible in real why a high class metropolitan girl would fall for rural boy who have no talent there is bothing interesting this novel is full of nonsense there is bothing in the characters who make you enjoy it has just a boring stuff