After failing to find decent chords for the song i tried figuring them out myself and i have made the entire chord melody for the song so i am quite certain these fit even though they require 2 scary sounding yet very easy chords. Have fun playing :)

Credits-
Song - HUA HAIN AAJ PEHLI BAAR
Singers - Armaan Malik & Palak Muchhal
Music - Amaal Mallik.
Lyrics - Manoj Yadav
Music Producers - Sourav Roy & Amaal Mallik.
Song Mixed & Mastered by - Eric Pillai at Future Sound Of Bombay. Assit Mix Engineers - Michael Pillai , Lucky.

Music Team -
Music Assistants - Zaid Patni & Yash Narvekar.
Live Guitars - Ankur Mukherjee
Live Rhythms Arranged & Performed by - Dipesh Varma
Vocals Recorded by - Surajit Ghosh at T-Series Studios.
Live Instruments recorded by - Benvin Fernandes & Aslam Khan at Audio Slam Studios.

Music on T-Series