The first things I thought of when I saw the titles was the song "It was" and the album "A BALLADS". "You were..." is actually "It was" but in second person form

Clever me, huh? (not)
I like the title BALLAD. When someone names a song with those kind of names (like Love Song, Poem etc) it feels like they're dedicating it to someone special, and singing with all their heart to them. It makes me really excited for the single.
And about Red Line, it doesn't have to do with fate or her bracelet. It could be something ~dangerous~ too

(just kidding, I think it's about friendship/bonds). I'll put this on my wish list for christmas, hopefully my parents can buy it some way or another!