Last to Know

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