I'm no expert, I'm actually kind of a newby to playing guitar but the other tabs 
for this song are kinda bad so I figured I would try my hand at it.

Let me know if I miss something.

I always mute the E string for the G chords except for the last chord in the 
chorus.  I also don't have the ending finished but I figure this should give you a good start.

***Verse1***
CThe (x32010@1)walls between
G (320003@1)You and I 
Dm (xx0231@1)                             Am (x02210@1)                GAlways (320003@1)pushing us apart nothing left but scars fight after fight 

CThe (x32010@1)space between 
GOur (320003@1)calm and rage 
Dm (xx0231@1)                             Am (x02210@1)             Gstarted (320003@1)growing shorter , disappearing slowly day after day 

***Pre-Chorus***
For this section use power chords.
    D (xx0232@1)  E (022100@1)  F|-------------------------------------------------------------------------| (133211@1)|-------------------------------------------------------------------------|
|----7---9----10----------------------------------------------------------|
|----7---9----10----------------------------------------------------------|
|----5---7----8-----------------------------------------------------------|
|-------------------------------------------------------------------------|

D (xx0232@1)                         E (022100@1)            FI (133211@1)was sitting there waiting in my room for you 
                        DYou (xx0232@1)were waiting for me too 

And it makes me wonder 

***Chorus***
CThe (x32010@1)older I get
GWill (320003@1)I get over it 
Dm (xx0231@1)            
It's been way too long for the times we missed 
Am (x02210@1)                  G (320003@1)                      CI (x32010@1)didn't know then it would hurt like this but I think 

CThe (x32010@1)older I get 
GMaybe (320003@1)I'll get over it 
DmIt's (xx0231@1)been way too long for the times we missed 
Am (x02210@1)                     GI (320003@1)can't believe it still hurts like this 

***Verse2***(same chord as Verse1)
CThe (x32010@1)time between 
GThose (320003@1)cutting words 
Dm (xx0231@1)                             Am (x02210@1)                GBuilt (320003@1)up our defenses never made no sense it just made me hurt 
CDo (x32010@1)you believe 
GThat (320003@1)time heals all wounds 
Dm (xx0231@1)                             Am (x02210@1)                GIt (320003@1)started getting better but it's easy not to fight when I'm not with you 

Pre-Chorus+Chorus(1x)

***Bridge***
Am (x02210@1)                 
What was I waiting for
C (x32010@1)                              GI (320003@1)should've taken less and given you more

I should've weathered the storm 
                 AmI (x02210@1)need to say so bad 
                        CWhat (x32010@1)were you waiting for 
                         G (320003@1)          CThis (x32010@1)could have been the best we ever had 

Chorus(1x)

Good luck and let me know what I screwed up!