I'm upset with my friend with cancer.
Why are you mad at them?
Because he wears my favorite shirt and shoes. He he using his illness to get what he wants.
Being upset with your friend who has a terminal illness over something so minor is not right. They are going through an extremely tough time dealing with cancer, so surely you can handle them wearing your shirt and shoes sometimes.
You are trying to take this cancer card out of the picture.
They are short of time and it would be wise to let him have what he wants before he's gone.