Arjun's been training with the international basketball team from USA to perfect the sport.
The film, directed by Mohit Suri, also stars Shraddha Kapoor.
'Half Girlfriend' is an adaptation of a novel of the same name written by author Chetan Bhagat. This is not the first time that Arjun will be working in an adaptation. He has also starred in the movie '2 States', an adaptation of Bhagat's book '2 States: The Story of My Marriage'.