Disclaimer: Remus Lupin isn't mentioned in this poem by name, but he's who I'm talking about, and if it's even remotely possible to sue me on that account, here's what's stopping you: Remus Lupin belongs to J.K. Rowling.
Alone
I'm always alone,
Surrounded by friends,
The beast, it has grown,
The pain never ends,
No one is allowed
To know what has been done
To me, because now,
I'm two beings in one,
I'm alone.
I'm never alone,
There's someone inside me,
Though no one has known,
Except those who died- see
I'm a curse, I'm sure,
I know that I'm dying,
There isn't a cure,
I know, I've stopped trying,
I'm never alone.