I see the way you smile, the way you touch her hair
And I can feel it in the air, something ain't right
I watch as you hold her hand, whisper in her ear
But deep down, I know the truth, it's tearing me apart
All those late nights out, all the secrets you keep
I never thought that you'd be the one to cheat
But now I see it clear, the signs were all there
And I'm left here standing, the last to know, unaware
Why did you have to go and break my heart?
Why did you have to tear my world apart?
I never thought I'd be the one left behind
But now I know the truth, I was the last to find
Oh why did you have to go and break my heart?
Oh why did you have to tear my world apart?
Ohhh-ohhh-ohhh-ohhh-ohhh
I never thought I'd be the one left behind
I guess I was
The last to know