Second what others have said about this being a good song with vocals well done and everything gelling really nicely together. There's a natural smoothness to this that must only come with experience.
If you're looking for something to play around with, as far as the production goes, then I might try two things (if it were me).
1) On the ' Won't you tell me why ' part, where you're holding the ' i ' at the end, you might consider a walk up (1-3-4, 1-3-5, or something ?) vocally on the last chorus
2) The drums might contribute more to this song if there were more dramatic fills at the transitions or cymbal crashes at other key points.
Keep in mind that I am new, and the song works great (for me) as it is. So take the above with a grain of salt.