Subjunctive,because it's using the word "were",which is a verb,and it is contary to reality&a wish or a hypothetical.
I’ve been searching the lyrics for bout ten minutes not can’t find nothing. I hear I gotta get someone new and maybe I’ll find a little line too
It means the breeze moved the curtains lightly and it uses Personification :)
It doesn't matter just read it cuh
