You Think You Know Someone

[Verse 1]
I've learned to live
With a heavy heart
And to play my part
And I've learned to live
With my fingers crossed
When all hope is lost

[Pre-Chorus 1]
But how can you trust
What you've learned
When the person you love most
Isn't who you thought they were

[Chorus]
'Cause you think you know someone
Like the moon and the stars
Like the light and the dark
You know someone
Like the back of your mind
Like a moment in time
You think you know someone
Like you learned to love them
'Cause you think you know someone
'Til you don't

[Verse 2]
And I've fallen for
All your hopeless lies
I've fallen countless times
And I thought I knew
That gleam in your eyes
When they looked in mine

[Pre-Chorus 2]
But now I don't see you the same
'Cause the person I loved most
Looks at me a different way

[Chorus]
'Cause you think you know someone
Like the moon and the stars
Like the light and the dark
You know someone
Like the back of your mind
Like a moment in time
You know someone
Like the sun on your skin
Like the warmth from within
You think you know someone
Like you learned to love them
'Cause you think you know someone
'Til you don't

[Outro]
Yeah, you think you know someone
'Til you don't