Released in 2012, "Heartless" is a romantic thriller film directed by Sanjeevani. The movie stars Sidharth Malhotra and Shraddha Kapoor in lead roles and tells the story of a young couple whose relationship is put to the test when the boyfriend's dark past comes back to haunt him.

"Badtameez Dil" is a soulful love song sung by the talented duo of Mika Singh and Asees Kaur. The song was composed by the renowned music director, Lalit Pandit, and written by the celebrated lyricist, Manoj Yadav. The track is a beautiful expression of the pain and longing that often accompany love.

The movie received mixed reviews from critics but performed moderately well at the box office. However, the soundtrack, including "Badtameez Dil," received widespread acclaim and helped establish the film's place in the hearts of audiences.