Lyrics:

Britney Spears:
I've been thinking, just sitting thinking
On why I love you and all the reasons
And if I lost you, boy, if I lost you
I'd lose myself and I wouldn't feel the way I feel now
You bring me zen, yes you bring me zen
You make me feel like a million billion
And I let you in but don't you break my heart
Don't you rip me apart, boy don't you rip me apart

will.i.am:
Baby, love, it should be easy
It shouldn't be complicated
It should be easy
I don't know how or where else to say it

Britney Spears:
I've got visions, boy, I've got visions
Of me and you happily just living
I know they're out there, them beautiful men
But you my future, baby, you my right now
If there was a scale from one to ten
On my love, for you it's million billion
Boy I'll love you 'til the day I'm dead
So please don't mess with my head
Please don't mess with my head

will.i.am:
Baby, love, it should be easy
It shouldn't be complicated
It should be easy
I don't know how or where else to say it

Britney Spears:
La di dee, la di da
It's the only way to love
La di dee, la di da
It's the only way to love

To love, to love, to love...

will.i.am:
I don't know how

Baby, love, it should be easy
It shouldn't be complicated
It should be easy
I don't know how or where else to say it

La da dee, la di da
It's the only way to love
La da dee, la di da