I'm not a huge fan of All Time Low, but I found this to be an interesting read all the same. You've done an excellent job capturing the character's emotions—her confusion and heartbreak and longing seem very real and intense. However, I thought the climax was a bit of a let down. It seemed very rushed. A bit more description and dialogue and padding would've went a long way in this case. You might also want to double check your grammar because I found quite a few mistakes; especially, concerning the placement of commas. Luckily, the mistakes were minor and not overtly distracting.
Overall, I'd say the story was quite good. It makes for a nice, short read, and only leaves the reader a little dissatisfied. If you took the time to polish it up a little more, I'd say without a doubt this story has the potential to be really fantastic.
Loved it. Very well written, and it didn't hurt that i'm a huge All Time Low fan. Needed more Alex in it, and a little more build up, I think, but it was really cute. :) Will you be writing more?