for the intro have a second guitarist strumming a D/G chord. if not just strum the
strings open. the strumming is just up down up down or 1-2-3-4 if you count strums

­D/G   (300230)
D     (xx0232)
Dsus4  (x00233)
Bsus2 (020230)

intro bit (the 101010's are 10's)
E|-------0-0-0-0----0-0-0-0---0-0-0-0------|
A|-------0-0-0-0----0-0-0-0---0-0-0-0------|
D|-------0-0-0-0----0-0-0-0---0-0-0-0------|       x4
G|-------0-0-0-0----0-0-0-0---6-6-6-6h7h9--|
B|------101010-8b---8-8-8-5---0-0-0-0------|
e|-------0-0-0-0----0-0-0-0---0-0-0-0------|


Verse 1
D/G
For the longest time I thought I'd lost the best of me

But I'll be damned if I quit now and that's for sure

All I ever wanted was for you to look at me
Bsus2
And know I'm all yours
D/G
Like the penguins need their wings for deep cold water dives

Like the earth needs the moon to keep it on course
Bsus2
When you touch me

I know there is purpose in my life
D/G                       D
Just know I'm all yours

Chorus
D
I'm a mess,
Bsus2              D/G
I confess that I'm nothing without you
             D                                Bsus2
And there is nothing I can do to prove to you I'm being honest
           D/G
Now I see, everything and yes I've known it all along
D                           Bsus2                  D/G
I was so lost, but I'm back and I finally know now where my heart belongs

play intro bit

Verse 2
Dsus4
I've been wondering if you could ever realize
Bsus2
That we're growing up so fast, and it's insane
        D/G
My dear our hearts have gotten good at pumping cheap new lust
Dsus4                  D
Into our young veins
Bsus2      Dsus4       D/G
Suddenly I understand everything I couldn't comprehend

Chorus
D
I'm a mess,
Bsus2              D/G
I confess that I'm nothing without you
             D                                Bsus2
And there is nothing I can do to prove to you I'm being honest
           D/G
Now I see, everything and yes I've known it all along
D                           Bsus2                  D/G
I was so lost, but I'm back and I finally know now where my heart belongs

Bridge
Dsus4                     Bsus2
All this time I've spent without you by my side,
D/G
I dreamt about you
Dsus4            Bsus2          D/G
Saw you through the windows in my mind
Dsus4              Bsus2         D/G
Carved a home for you deep down inside my chest
                    Dsus4        Bsus2          D/G
And I never want to lose such a big part of me again
    Dsus4        Bsus2          D/G
... lose such a big part of me again

Chorus
D
I'm a mess,
Bsus2              D/G
I confess that I'm nothing without you
             D                                Bsus2
And there is nothing I can do to prove to you I'm being honest
           D/G
Now I see, everything; and yes I've known it all along
D                           Bsus2                  D/G
I was so lost, but I'm back and I finally know now where my heart belongs


i tried my best to tab out this song maybe now someone more experienced can retab it in 
better way but for now this'll have to do =D