Lyrics:

Ooh, simply 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 fell 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, 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 out of my place

You say I'm crazy and that we're happy
Is that supposed to comfort me? Oh yeah

I didn't get it the first time
But don't think I feel so blind
But 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, 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
Without you I'm just fine
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 feel so blind
Yeah, 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, you

Simply 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