You're a one of a one, a one of a kind 
That you only find once in a lifetime 
Made to fit like a fingerprint 
A code that clicks open a gold mine 

They say one man's trash is another man's treasure 
When I found you, it was all pitter-patter 

Secretly, I hit the lottery 
'Cause you're brighter than all of the Northern Lights 
You speak to me, even in my dreams 
Wouldn't let you go for even the highest price 

They say one man's trash is another girl's treasure 
So if it's up to me, I'm gonna keep you forever 

'Cause I understand you, we see eye to eye 
Like a double rainbow in the sky 
And wherever you go, so will I 
'Cause a double rainbow is hard to find 

Was a phenomenon when you came along 
Yeah, our chemistry was more than science 
It was deafening, a lot like lightning, it was striking 
You couldn't deny it 

They say one man's trash is another man's treasure 
The two of us together, make everything glitter 

'Cause I understand you, we see eye to eye 
Like a double rainbow in the sky 
And wherever you go, so will I 
'Cause a double rainbow is hard to find 

To the bottom of the sea, I'd go to find you 
Climb the highest peak to be right beside you 
Every step I take, I'm keeping you in mind 

'Cause I understand you, we see eye to eye 
Like a double rainbow in the sky 
And wherever you go, so will I 
'Cause a double rainbow is hard to find 

It's hard to find 
It's hard to find 
Once in a lifetime 
Once in a lifetime 
Once in a lifetime