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
Oh, I'll never understand it
I thought she knew

(Chorus)
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've known, I should've known

A heart full of words left unspoken
Now that we're through
I tell my soul to have this side less broken
I thought she knew
I thought she knew

(Chorus)
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've known, I should've known

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