You're like a junk email in my inbox Keep coming back, you keep coming back You're like a constant ringing in my ears You keep calling back, why are you calling back? You're like a train that's running out of steam You're losing track, should've stopped way back You're with a new girl now, she's only 16 Hanging off a string, I heard her heart smash So tell your girlfriend you used to be my boyfriend Used to be my boyfriend, how would she like that She doesn't know about all the things you've done then All the things you've said just to try and get me back But you had your chance Peroxide on your heart It's burning, it's falling apart Peroxide on my heart It's turning light from the dye Peroxide in your eyes It's burning, burning your heart Peroxide, you ask why You ask why it all fell apart (It'll all fell apart) She's one beautiful rose in a thorn field She doesn't know that you're among those She can only give so much until you take Take yourself back and leave the pain So tell your girlfriend you used to be my boyfriend Used to be my boyfriend, how would she like that She doesn't know about all the things you've done then All the things you've said just to try and get me back But you had your chance Peroxide on your heart It's burning, it's falling apart Peroxide on my heart It's turning light from the dye Peroxide in your eyes It's burning, burning your heart Peroxide, you ask why You ask why it all fell apart Let it burn cuz it's your turn To feel something now Let it burn, let it burn Cuz it's your turn to feel something now Peroxide on your heart It's burning, it's falling apart Peroxide on my heart It's turning light from the dye Peroxide in your eyes It's burning, burning your heart Peroxide, you ask why You ask why it all fell apart