OK. I finally heard the song let me start my post by saying this:
Holy **** what a beautiful written and well produced song

the lyrics are really good and it does a great job at showcasing their talent. It gave me Christina Perri teas while I was listening to it.
NOW on the other hand, this does not feel like a comeback song especially after all these years. Its a really really good song, there's no doubt about it but it feels more like a final or 3rd single. I wish they'd come back harder and would've saved after securing a smash but good luck I hope I'm wrong and it does well because as I said the song is really good.