She was my once in a lifetime
Happy ending come true
Oh, I guess I should have told her
But I thought she knew
She said I took her for granted
That's the last thing I would do
Oh, I'll never understand it
Cause I thought she knew
(I thought she knew)

I thought she knew my world revolved around her
My love light burned for her alone
But she couldn't see the flame
Only myself to blame
I should have known
I should have known

A heart full of words left unspoken
Now that we're through
I'd sell my soul
To have this silence broken
Oh, I thought she knew
I thought she knew

I thought she knew my world revolved around her
My love light burned for her alone
But she couldn't see the flame
Only myself to blame
I should have known
I should have known

She was my once in a lifetime
Happy ending come true
Oh, I guess I should have told her
But I thought she knew
I thought she knew
(I thought she knew)
I thought she knew
(I thought she knew)
I thought she knew
I thought that she knew