How I play It's complicated on my Acoustic guitar. Hope you will enjoy and please 
leave a rating :)

Standard tuning. 
Tip. Its nice to play the chords open like power chords but you still play the empty strings.

Powerchords      Normal chords
C#m (X46600) -- (X46654) C#m 
A   (X02200) -- (X02220) A 
E   (022100) -- (022100) E
B   (X24400) -- (X24442) B

Verse:
         C#m (x13321@4)            A (x02220@1) 
Here we go again, another night of being bummed
       EI (022100@1)keep to myself, avoid the sun
          BAnd (x2444x@1)cancel plans with everyone

C#m (x13321@4)              AI (x02220@1)know cause its just how it always ends
   EOur (022100@1)bond will break cause you can't relate
B (x2444x@1)                       A(hold (x02220@1)this chord)
To anyone, to anything at all

Bridge:
                 C#m (x13321@4)         B (x2444x@1)       AYou (x02220@1)brought your worst and I'm right here
                 B (x2444x@1)(guitar silent for this part)
Now I've seen it all, and it's never been so clear

Chorus:
E (022100@1)                          BYou're (x2444x@1)not the person that I knew back then
AIt's (x02220@1)all too late to set things straight cause 
C#m (x13321@4)          Beverything (x2444x@1)has been
E (022100@1)                          BYou're (x2444x@1)not the person that I knew back then
ALets (x02220@1)try and act like this didn't happen
C#m (x13321@4)                        BFollow (x2444x@1)your friends like you ever had them

Verse:
              C#mYou (x13321@4)still know me
              AStill (x02220@1)not cut out for this sort of thing
      ENever (022100@1)want to be, caught in between
       BI (x2444x@1)need constant reminders of everything
          C#m (x13321@4)                       ASo (x02220@1)what! It's who I am, but I think I played it off so well
EI (022100@1)just hold it in, no matter how I've been,
Bso (x2444x@1)nobody, nobody can tell

Bridge:
                 C#m (x13321@4)         B (x2444x@1)       AYou (x02220@1)brought your worst and I'm right here
                 B (x2444x@1)
Now I've seen it all, and it's never been so clear

Chorus:
E (022100@1)                          BYou're (x2444x@1)not the person that I knew back then
AIt's (x02220@1)all too late to set things straight cause 
C#m (x13321@4)          Beverything (x2444x@1)has been
E (022100@1)                          BYou're (x2444x@1)not the person that I knew back then
ALets (x02220@1)try and act like this didn't happen
C#m (x13321@4)                        BFollow (x2444x@1)your friends like you ever had them