First of all Song is written by amitabh bhattacharya song has a deep meanings which has been expressed by arijit singh very well. "THIS HEART IS COMPLICATED" is the meaning of ae dil hai muskhil the song is already a hit has million of view on youtube. You can feel the song as well as can connect with it easily. If you are slow song lover especially If you are Arijit fan love this song after long time got song can be listen to again and again