[Intro] Simple math: our love divided by the square root of pride Multiply your lies, this time I'm going out of my mind It was heavy when I finally figured it out alone [Chorus] And I know I'm wrong sometimes, oh But it ain't rocket science, no And I may not be Einstein But I know dumb plus dumb equals you [Break] Dumb plus dumb equals you Dumb plus dumb equals you [Verse 1] Even had the nerve to flirt with her in front of my face Here's your keys, your bags, your clothes So now get out of my place You say I'm crazy and that we're happy Is that supposed to comfort me? [Chorus] [Break] [Verse 2] All of the promises flushed 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 [Break] [Chorus] And I know I'm wrong sometimes But it ain't rocket science, yeah I may not be Einstein But I know dumb plus dumb equals you [Outro] Simple math: our love divided by the square root of pride Multiply your lies, this time I'm going out of my mind And I may not be Einstein But I know dumb plus dumb equals you