This is the song brilliantly compose by Amaal malik and sung by Armaan malik [they both are siblings, son of dabbu malik(famous person in Hindi film industry and brother of Anu malik) ].lyricist of the song is rashmi(also written famous songhamari adhuri kahani).
Its best part is video of the songs in which Emraan hashmi loves Esha gupta but she got married with some other guy, so Emraan hashmi is telling the story through this song to eshas son .i know its complicated . for that you have to watch this video, picturisation is perfect and emraan hasmi does superbly well .
Every line in this song will make you to fall in love .so go and listen it .you will defenitely love it .that is for sure .
thanks for reading