My Sister

You try to understand me,
But that will never be.
You try to let me talk,
I can’t, so I walk.
You finally got me to spill,
You now know why I cry til I’m ill.
Some days are harder,
Some days are easier.
But you will still be here,
And you’ll always lend an ear.
You’ll always give me a hug, mister,
But you can never be my sister.