Question: Who is the author of the novel that had a movie based on it and contained the song "Thodi Der"?

Related documents: [0]  [DOC] "Thodi Der" (English dub: Stay a Little Longer) is a popular song from the soundtrack of the Bollywood film Half Girlfriend. The song was composed by Pakistani singer Farhan Saeed, who originally performed the song (titled "Tu Thodi Dair")) with established Indian singer Shreya Ghoshal. [END] 
[1]  [DOC] Half Girlfriend is an Indian romantic drama film based on the novel of the same name written by Chetan Bhagat. The film is directed by Mohit Suri and features Arjun Kapoor and Shraddha Kapoor in the lead roles. [END]  
Answer: Chetan Bhagat
Chetan Bhagat