A father (or dad) is a male parent who has raised a child, supplied the sperm through sexual intercourse or sperm donation which grew into a child, and/or donated a body cell which resulted in a clone.
Nothing will change this definition, no matter how we want to use the term 'father' in hundreds of other ways.....
Jimmy can't have two fathers or two mothers....the word has a specific meaning.....
Is your partner pressuring you to marry him!