I'm a terrible person   I'm a terrible person   I'm a terrible person   Cause I've made up my mind   I'm a terrible person   Cause I've led her on   And I'm the only one who knows what I've done to her   I'm much smarter now   I won't tell her friends before her   It's gonna be a bad day come Sunday   It's gonna be a bad day come Sunday   I'm a terrible person   I read her diary   I'm not to be trusted   I told all of her secrets to all the guys in town   They all laugh and slap me five   Luckily she doesn't have dirt on me   Cause I'm the cleanest guy   I'm afraid   I don't think I'll ever be sorry   No I'm not sorry for a thing I've done   And I don't think I'll ever wake up lonely   Cause having her around wasn't all that special