I watched you walk into the room
I watched you while he was kissing you
And now it’s he says she says
Tell me the truth
You know I saw you, caught you
Do what you do
You know I watched you
Doing what you do

Told me I’m the one
Hope you had your fun
I’m done and I want out of this

Heart attack Heart attack
I’m never gonna take you back take you back
I’m never gonna break
I’ll show you
I won’t call you
Heart attack heart attack
I’m never gonna live with that live with that
My nightmare just came true
And now heart attacks on you

Do you miss me
When you close your eyes
And do you still see
Me in his disguise
And now it’s he says she says
All of the lies
Now I saw you, caught you
What a surprise
And now I watched you
looking in his eyes

Told me I’m the one
Hope you had your fun
I’m done and I want out of this

Heart attack Heart attack
I’m never gonna take you back take you back
I’m never gonna break
I’ll show you
I won’t call you
Heart Attack Heart attack
I’m never gonna live with that live with that
My nightmare just came true
And now heart attacks on you

Told you i'm the one
Hope you had your fun 
I'm done and I want out of this

Heart attack Heart attack
I’m never gonna take you back take you back
I’m never gonna break
I’ll show you
I won’t call you
Heart Attack Heart attack
I’m never gonna live with that live with that
My nightmare just came true
And now heart attacks on you

I’m never gonna break
I’ll show you
I won’t call you
Heart attack heart attack
Heart Attack heart attack
My nightmare just came true 
And now heart attacks on you

                          Thanks to beth for these lyrics