I tell my students you have an absolute right to write about people you know and love. You do. But the kicker is you have a responsibility to make the characters large enough that you will not have sinned against them.
I'm a mad Gummi fan. I always have Gummis in my trailer. But you can't eat too many because then you get Gummi tummy, and that's no good. I can't believe I'm saying this.