Lyrics:

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

She said I took her for granted
That's the last thing I would do
Whoa I'll never understand it
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
Whoa 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

Oooooooo
Oh I thought that she knew
Yeah ooooooo