The other version has some of the right chords, but some of them should be minor instead of major.

D         F#m
 Children behave
Bm                A
 That's what they say when we're together
D              F#m
 And watch how you play
Bm                A
 They don't understand and so we're
F#m                        D
Runnin' just as fast as we can
Fm#                         D
Holdin' on to one another's hand
G
Tryin' to get away into the night
A
And then you put your arms around me
And we tumble to the ground
             D
And then you say
               A
I think we're alone now
G
There doesn't seem to be anyone around
D              A
I think we're alone now
G
The beating of our hearts
is the only sound

Same for previous verse: D, F#m, Bm, A

Look at the way
We gotta hide what we're doing
'Cause what would they say
If they ever knew and so we're

Same as previous pre-chorus: F#m, D, G, A

Runnin' just as fast as we can
Holdin' on to one another's hand
Tryin' to get away into the night
And then you put your arms around me
And we tumble to the ground
And then you say

Same as previous chorus: D, A, G

I think we're alone now
There doesn't seem to be anyone around
I think we're alone now
The beating of our hearts
is the only sound
I think we're alone now
There doesn't seem to be anyone around
I think we're alone now
The beating of our hearts
is the only sound
Runnin' just as fast as we can
Holdin' on to one another's hand
Tryin' to get away into the night
And then you put your arms around me
And we tumble to the ground
And then you say
I think we're alone now
There doesn't seem to be anyone around
I think we're alone now
The beating of our hearts is the only sound