I ain't gonna lie to you and say it didn't hurt 
to see you with someone new and you were wearing my old blue shirt 
but it didn't kill me un-til we said hello 
and i became someone you used to know 
Chorus: 
like a friend like a fool like some guy you knew in school 
didn't we love didn't we share or don't you even care 
i know we said we were through but i never knew how quickly i would go 
from someone you loved to someone you used to know 
If you didn't tell him about those weekends at the coast 
or how we use to argue about who loved who the most 
well, i guess i won that one cause i still need you so 
but to you i'm just someone you used to know 
Chorus 
Didn't we love didn't we share or don't you even care 
i know we said we were through but i never knew how quickly i would go 
from someone you loved to someone you used to know 
i'm not someone you love i'm someone you used to know