Noel,

Deciduous. What an interesting word to base a (lost) love song on!
The write does a great job of developing the idea, too.
The cold drop of autumn, remembering the strength of Spring, the hope of summer renewal...

The production and mix are tight. All the instruments have a good sound.
The vocals sit perfectly in the mix.
(One of your best mixes, I think).

Very well done.

fj