If you listen to this song closely enough, digging out the meaning behind it becomes shockingly easy. To put it in the most simplest terms: cheating. Before I further explain, I'd like to compliment the fact that the video breaks the standards of men always cheating on women and gives us, for once, a woman cheating on a man. Now, onto the meaning of the song: a man and a woman (husband and wife, probably) are deeply in love. Slowly but surely, they begin to fall out of love, the woman detaching herself first. Eventually (towards the video's end) the man finds his wife with another man. "My love for you was bulletproof, but you're the one who shot me," is stating that they had impenetrable love, and when it ended, it was the woman's fault. The end of the song is likely after the man has packed his bags and left the woman, leaving her nothing more than a note: "By the time you're hearing this, I'll already be gone" or even a recording.

I believe this song is about someone, possibly a member of a band (likely All Time Low) who, for one night/day, would like to let themselves go. As they progress further into fame, they fall further into a rut ("Now I'm stuck in this fucking rut") or rather, depression. They've lost who they truly were or who they had once been, and it is in their highest hopes to have just a moment to let it all go. If you've ever seen the video, we're introduced to all different types of fans (the groupies at the beginning probably stuck the most) - who are what? Only fans of the attractiveness of the band, not their music or personalities. The song is about someone who is battling depression, and praying for someone to notice them as who they really are.

I'd venture to guess this song is about All Time Low's fame and the childhood they've left behind, memories of it that have faded over time but managed to stick. In simpler words, it's about fame and leaving old friends behind - not only this, but leaving everything behind. Your childhood memories, the place you used to reside, all of the people you used to spend your time with, etc. However, as the song progresses, it presents itself as a song about not only past friends, but about a past lover. It's probable that this was written about one night of an escape from fame, spending time with someone from your past (possibly an ex-lover) and reminiscing over the good times.