I got the feelings of nostalgia and melancholy, but the latter is more remembered than current. And in parts, hopeful.

I like the slow pace, gives it a dreamy feeling. The more crowded lines like:
I’ll forget to remember him everyday; and especially
But when the tether on my heart cuts loose
broke that feeling for me somewhat and seemed out of sync with the rest of the song.

Love the melody, and the instrumententation suit the song beautifully.