Author Chetan Bhagat revealed the new and his `favourite` poster from the upcoming film `Half Girlfriend`. The bright new poster shows lead actors Arjun Kapoor and Shraddha Kapoor hanging on to the back of a bus. Bhagat also shared four stills from the movie. The stills show Shraddha giving Arjun a tender kiss, playing basketball and also singing in front of a crowd.`Half Girlfriend` is based on Bhagat`s latest, bestselling novel by the same name and is directed by Mohit Suri.It will release on May 19.