Be strong, my little friend. We know you don't want to be there with the man who says he is your father. He doesn't deserve the title father. You named him rightly as the donor. He is nothing more than that, and that he is a scoundrel deserving only our richest contempt.
When asked questions by the authorities there, speak up. Tell them what YOU want. Be truthful. Maybe someone might listen. Someone must listen to the one person this is all about. That's you.
I love you, little friend.