My Dad has always been my Dad, but he's not my biological father. We have a real dad-daughter relationship and recently he has asked me to call him Dad. Almost 40 years being told to call him his name and now he tells me he'd love me to call him Dad. I don't know nor want to know my biological thing however I'd love to make it official that the real man that is my Dad and brought me up is the best Dad ever.
Looking on the internet it seems adult adoption is not allowed, I was wondering if anyone knew if i could make a contract stating he is my Dad and I want him to be forever known as that, is this possible?