there's a difference between the meaning of
"i'm sad" and "i'm sad inside"
just being sad, externally, is fleeting
it's in response to a bad grade
a fight with someone close
it passes and it's okay to feel that way

being sad inside, eternally, doesn't leave
it's just there
you can feel it in your bones
a hollowness that you can't really explain to your friends
without sounding like a pretentious young adult novel character
it's been there for a while

i'm okay on the outside i guess
i have days where i feel alright
but i'm sad inside
and the sadness has become a part of me