It kinda felt like you stuck too closely too the song. I think you could've drawn out the story more, put more depth behind it, really dug into the characters and helped the readers figure out how they tick exactly. And the almost exact quoting at the end of the story kinda bothered me. It seemed like you could've rephrased it a lot more.
Yay first comment. Well done! I can't believe this is only your first one-shot. I'm looking forward to reading more of these from you in the future.
You have taken one of my favourite All Time Low songs and based a believable story on it. This is something I could totally see happening to Alex. I loved how you integrated the lyrics into the story but added your own bits to it too instead of having it as chunks of lyrics.