Simple math
Our love divided by the square root of pride
Multiply, your lies plus time
I'm going out of my mind
It was heavy when I finally figured it out alone

I didn't get it the first time,
But don't think I've been so blind
And I may not be Einstein but I know,
Dumb plus dumb equals you (dumb plus dumb equals you),
Yeah-yeah-yeah (dumb plus dumb equals you)

Even had the nerve to flirt with her in front of my face,
Here's your keys, your bags, your clothes and now get outta my place,
You say I'm crazy, now we're happy,
Is that s'posed to comfort me? Oh, yeah..

I didn't get it the first time,
But don't think I've been so blind
And I may not be Einstein but I know,
Dumb plus dumb equals you (dumb plus dumb equals you),
Yeah-yeah-yeah (dumb plus dumb equals you)

All of your promises, plus,
A thousand apologies, just,
Take out the pain and then it leaves us,
With nothing at all, no, nothing at all.

You can stop wasting my time (ooh)
Without you I'm just fine (ooh)
Why did it take me so long to figure out,
Dumb plus dumb equals you, equals you, yeah

I didn't get it the first time,
But don't think I've been so blind
And I may not be Einstein but I know,
Dumb plus dumb equals you (dumb plus dumb equals you),
Yeah-yeah-yeah (dumb plus dumb equals you)

Simple math,
Our love divided by the square root of pride,
Multiply, your lies plus time,
I'm going out of my mind,
And I may not be Einstein,
But I know dumb plus dumb equals you, equals you