I thought i'd put this up as the other one on this site seems to be wrong.
Here you are, p.s. this is my first tab so apologies for any mistakes 

Many strumming patterns work, but i think a nice fast one works best

Intro: C G F G x2

Verse 1:

C                             G
Didn't they say that I would make a mistake
F                        G
Didn't they say you were gonna be trouble
C                        G
People told me you were too much to take
F                      G
I could see it, I didn't wanna know
C                    G
I let you in and you let me down
F                    G                    
You messed me up and turned my life around
C                        G
left me feeling I had nowhere to go
F                      G
I was alone, how was I to know that

Am                      G
You'll be there, when I needed somebody
Am                    G
You'll be there, the only one to help me

Chorus:

C          G                 Bb
I had a picture of you in my mind
         F                 C
Never knew it could be so wrong
         G                       Bb
Why'd it take me so long just to find
F                             C      G F G
The friend that was there all along


Verse 2: same chords as before

Who'd believe that after all we've been through  
I'd be able to put my trust in you
Goes to show you can forgive and forget
Looking back, I have no regrets cause

You'll be there, when I needed somebody
You'll be there, the only one to help me

Repeat Chorus

Many thanks for reading