Fun. - All Alright Lyrics Meaning

I think in the beggining,
" I got the call soon as the day hit night.
As soon as the headlights lit up the Westside.
I stopped the car and came outside
Cause I know that tone.
I remember the first time
we wished upon parallel lines.
Waiting for a friend to call
and say they're still alive.
I've given everyone I know
a good reason to go.
I was surprised you stuck around
long enough to figure out"

Basically refers to someone getting into a car accidents, someone he obviously cared for and they 'stuck around' unlike other people who have just walk out of his life.

Then by the end of the song,
" And I know, know, know
You've fallen from the sun.
Crashing through the clouds.
I see you burning out.
And I know, know, know
that I put up a front
But maybe, just this once,
let me keep this one."

Maybe symbolizing his friends is reaching the end (I see you burning out)

and he is pleading (let me keep this one.) for his friends life, because this person means alot, this person didn't give up on him or leave.

The chorus seems very saracastic and sollum.

" Yeah, it's all alright.
I guess it's all alright.
I got nothing left inside of my chest,
but it's all alright."

saying, it's fine, I've lost everything but that's alright!

and then,
" I never claimed to be more than a one-night stand
I've given everyone I know
a good reason to go.
But I came back with the belief
that everyone I love is gonna leave me"

(I've never claimed to be more than a one night stand) makes me believe this "friend" was a love interest, then (i came back with the belief that everyone I love is gonna leave me) He has trust issues. I'll keep it short, or atleast try! This is my favorite song on Some Nights, and it deserved more than a two line analysis! :)