Beautiful little song. Looked at the existing versions and kind of went from there. Just 
now, no fancy stuff. Enjoy!

Bb, F, Bb, F, C, Bb, F, 
Dm


Bb       F
Oh, to be young
Bb              F      C
It sounds like so much fun
Bb           F
Oh, the long wait
     C         Dm          Bb        F
For things to happen, ... expectancy
Bb            F       C    Bb
And you, just waiting on me
        F                    Dm        C
I wanna know what's in your plans


Dm
If you're an ocean then
Bb
I wanna jump right in
F
If you're a hand grenade then
C
I'll pull the pin
Dm
I'll wait right here all night
Bb
For you to let me in
F
And I'll run, run, run, run
C
Run right back to you I'll run


Bb, F, Bb, F, C, Bb, F, 
Dm

Bb             F
Life's moving faster now
Bb        F
I'm older here
    C           Bb
But younger somehow
              F
Head full of fear
       C         Dm
And it makes me break
Bb             F
Please let me find you
Bb            F
Please let me know
      C         Bb
Just what you want
              F
Please let me see
        C           Dm    C
What you need me to be

Dm
If you're an ocean then
Bb
I wanna jump right in
F
If you're a hand grenade then
C
I'll pull the pin
Dm
I'll wait right here all night
Bb
For you to let me in
F
And I'll run, run, run, run
C
Run right back

Bridge
Am                       Dm
Oh if you could see in me
          Bb        C
You might be kinda scared
Am                     Dm
 Oh if I could just believe
               Bb   C
You'll take me anywhere

Dm
If you're an ocean then
Bb
I wanna jump right in
F
If you're a hand grenade then
C
I'll pull the pin
Dm
I'll wait right here all night
Bb
For you to let me in
F
And I'll run, run, run, run
C
Run right back to you, I'll run

Bb, F, Bb, F, C, Bb, F, 
Dm
Run right back to I'll run...