How to read tablature? 
 C chord                            Am chord
---3--------3--------3-------3--------0--------0--------0-------0---
-----0--------0--------0-------0--------0--------0--------0-------0-
-0------0-0------0-0-----0-0------0-0------0-0------0-0-----0-0-----
--------------------------------------------------------------------

You can play the whole song by either plucking this same patten ( above, for C, G, Am, F chords ), or you can just strum your way through. Both will sound lovely.

Intro:
C Am

Verse 1:
C                               Am
Hush now, let's go quiet to the park where it first started
C                           Am
Cold night, us lying in the dark
                    F                                 G
I felt my heart was trying to find a place for you to stay
             ( Hold G )
a place where I'd feel safe

Chorus:
C
Anything we have known
G
Anything we've forgotten
Am                             F
In the rain, in the dark we'll lay
                                C              Am
In your arms, in your arms I'll stay ( x2 )

Verse 2:
C                               Am
Take my hand, let's go into the trees
C                                   Am
Behind the branches, falling on our knees
F                            G               ( Hold G )
I remember feeling like this part of us would never change

Chorus:
C
Anything we have known
G
Anything we've forgotten
Am                             F
In the rain, in the dark we'll lay
                                C ( Am 2nd time )
In your arms, in your arms I'll stay ( x2 )

Bridge:
Am     F
Follow me
                 Am
We both know the way
    ( Hold G )
It's always been the same

Chorus:
C
Anything we have known
G
Anything we've forgotten
Am                             F
In the rain, in the dark we'll lay
                                C
In your arms, in your arms I'll stay ( x2 )
                                G
In your arms, in your arms I'll stay
                                Am
In your arms, in your arms I'll stay
                                F
In your arms, in your arms I'll stay
                               ( Hold C )
In your arms, in your arms I'll stay