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

Didn't get it from first time,
But don't think I'll be so blind,
And I may not be Einstein
But I know
Dumb + dumb = you
Dumb + dumb = you, yeah
Dumb + dumb = 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 [bad word] me, oh yeah

Didn't get it from first time,
But don't think I'll be so blind,
Yeah, I may not be Einstein
Dumb + dumb = you
Dumb + dumb = you, yeah

All of your promises plus
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 + dumb = you
Equals you, yeah

Didn't get it from first time,
But don't think I'll be so blind,
Yeah, I may not be Einstein
Dumb + dumb = you
Dumb + dumb = 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 + dumb = you,
Equals you.