There ain't nothing that you could say to me To make me want you back again There ain't nothing that you could aim at me To let you back into my head So what's wrong? You been showing off Boy that just ain't working It's gone it's all said and done Your attention's worthless Don't crawl back, I'll block your calls We broke once, we'd break again (uh-huh, oh whoa) (Babe) There's a reason you're my ex (ex, ex) There's a reason you're my ex Mm, hmm There's a reason you're my ex (my ex) There's a reason we're not friends There's a reason we don't text There's a reason you're my Honestly, there's not a thing that you could do For me to want you in my arms (my arms, my arms) Gotta be the most annoying thing, it's true (ahh) To watch you act like you've transformed So what's wrong? You been showing off Boy that just ain't working It's gone it's all said and done Your attention's worthless Don't crawl back, I'll block your calls We broke once, we'd break again (Babe) There's a reason you're my e-e-ex (ex, ex) There's a reason you're my ex Mm, hmm There's a reason you're my ex (my ex) There's a reason we're not friends There's a reason we don't text There's a reason you're my Ex-boyfriend And ex problem Your next girlfriend Should proceed with caution Ex (e-ex) There's a reason we're not friends There's a reason we don't text There's a reason you're my Worst regret A stupid waste of time Oh Biggest project I took on in my whole life I know you hate that I'm your e-e-ex (ex, ex) There's a reason you're my ex (there's a reason you're my ex) Mm, hmm There's a reason you're my ex (my ex) There's a reason we're not friends There's a reason we don't text There's a reason you're my Ex-boyfriend (ex-boyfriend) And ex problem (an ex problem) Your next girlfriend Should proceed with caution (you're better as my ex) Ex There's a reason we're not friends There's a reason we don't text There's a reason you're my