Should've known by the way you pass me by
There was something in your eyes
And it wasn't right
I should've walked but I never had the chance
Everything got out of hand and I let it slide
Now I only have myself to blame
For falling for your stupid games
I wish my life could be the way it was before I saw your face

You stole my happy
You made me cry
You took the lonely and took me for a ride
And I wanna un un un un undo it
You had my heart now I want it back
I'm starting to see everything you lack
Boy you blew it
You put me through it
I wanna un un un un undo it
Na na na na na
Na na na na na
Na na na na na na

Now your photos don't have a picture frame
And I never say your name and I never will
And all your things well I threw them in the trash
And I'm not even sad
Now you only have yourself to blame
For playing all those stupid games
You're always gonna be the same
Oh no you'll never change

You stole my happy
You made me cry
You took the lonely and took me for a ride
And I wanna un un un un undo it
You had my heart now I want it back
I'm starting to see everything you lack
Boy you blew it
You put me through it
I wanna un un un un undo it
Na na na na na
Na na na na na
Na na na na na na

You want my future you can't have it
Still trying to erase you from my past
I need you gone so fast

You stole my happy
You made me cry
You took the lonely and took me for a ride
And I wanna un un un un undo it
You had my heart now I want it back
I'm starting to see everything you lack
Boy you blew it
You put me through it
I wanna un un un un undo it

You stole my happy
You made me cry
You took the lonely and took me for a ride
Boy you blew it
You put me through it
I wanna un un un un undo it