A nice, simple song. The chords are just the same throughout.

Intro: Just hold E

1st verse

E (022100@1)                         A (x02220@1) I guess I got just what I wanted
E (022100@1)                      A (x02220@1) And all I wanted was a place
E (022100@1)                         A (x02220@1) When you passed me in the hallway
E (022100@1)                       A (x02220@1) On the way to your next class

Chorus:

C#m (x13321@4) I'm fucking up
B (x2444x@1) I'm fucking up
C#m (x13321@4)            A (x02220@1) I'm fucking up everything

Guess I got just what I wanted
We're both alone at my dad's house
And now's my chance to finally kiss you
But I got drunk and I passed out

I'm fucking up, I'm fucking up, I'm fucking up everything

Guess I got just what I wanted
A pretty girl to live with me
Split the rent right down the middle
And all I wanna do is leave

I'm fucking up, I'm fucking up, I'm fucking up everything

Outro: Same chords as the chorus

If you want to play that cute keyboard part during the verse on the guitar, it's just 
simple line on the high e string:

e--4--2-4--7--4--2-4-2-4------|

Listen to the song for the timing.

Aaaaaand...that's it. Enjoy!

Official website: http://sadcastle.com/