The soulful melody gives an insight into the lives of the lead pair as they both set out to spend time together until they get smitten with each other.
Sharing the song on Twitter, Shahid wrote, "Watch Kabir aur Preeti ko pyaar Kaise Hua.
The romantic track is penned by Manoj Muntashir while sung and composed by Vishal Mishra. Watch the song below:
Other than 'Kaise Hua', makers have also dropped 'Mere Sohneya', 'Tujhe Kitna Chahne Lage', and 'Bekhayali' from the forthcoming film.
The film comes as the Hindi remake of Telugu hit 'Arjun Reddy'. While the 'Padmaavat' star plays the lead character in the film, Kiara Advani, who was recently seen in Netflix's 'Lust Stories,' essays the role of 'Preeti'.
The original blockbuster starred Vijay Deverakonda and Shalini Pandey. When the teaser of 'Kabir Singh' dropped online, Vijay took to Twitter to appreciate Shahid's look.
The film is directed by Sandeep Reddy Vanga and produced by Bhushan Kumar, Murad Khetani, Krishan Kumar and Ashwin Varde. It will hit the big screens on June 21.