[Mark:] 
C Once in a lifetime
G You look in someone's eyes
FG And it feels like the world stops turning at once
FG That's what it felt like for me
AmD I knew knew right away this day would be
FC Standing together, believing forever
G Is there in our reach
 [Chorus (Mark):] 
C As love is my witness
I swear 
G I'll be with you till the end
FAm Nothing can tear this love apart
G I'll put my hand upon my heart
C This is the promise I'll make to you
GF Whatever comes we'll see it through
Am Nothing can break it
G This feeling's too strong
C As love is my witness
 [Shane:] 
C We've both known sorrow
G We've known heartache
F When our dreams for tomorrow
G Seem so far away
C But that brought us closer - yeah
G It brought us together
F So that we'd know the real thing
GCG That's why I can yeah - ye-eh-yeah
 [Chorus (Shane):] 
C As love is my witness
I swear 
G I'll be with you till the end
FAm Nothing can tear this love apart
G I'll put my hand upon my heart
C This is the promise I'll make to you
GF Whatever comes we'll see it through
Am Nothing can break it
G This feeling's too strong
C As love is my witness
FC I know whatever comes to be
GAm Together we'll face the mystery
FAm Here in my heart, deep in my soul
GD Somehow I know, I know
 
D 'Cos love is my witness
I swear 
A I'll be with you till the end
G Nothing in tear this love apart
A I'll put my hand upon my heart
D This is the promise I'll make to you
(This is the promise I'll make to you) 
AEm Whatever comes we'll see it through
G Nothing can break it
A This feeling's too strong
D 'Cos love is my witness
 
G Nothing can break it
A This feeling's too strong
D