I live in Florida. I am about to be married. I also have a 9 year old daughter. The man I am marrying is the only person my daughter has ever known as her father as we have been together since I was pregnant. I do not know who her "bio" father is as I was at a party when I was younger went to a room to lay down and 3 months pregnant realized I was pregnant (to make a long story short). I do not know who came into the room as the party was out of town and I heard about a cool party going on and decided to check it out. As the room was dark I did not see the person, but do know that I participated and was not raped. Obviously there is no father listed on my daughters' birth certificate. Since her "mom and dad" are getting married she realized that my last name will change and wants her last name to be the same as her daddys. She has no idea that he is not her "bio" father and we do not want her to find out. Everything I read on stepfather adoption and child name change mentions have the "bio" father sign over his rights. What do you do when you do not have a clue who the father is? Does this have to go to court? Does my child have to find out, this would devestate her she would probably need counseling (she is a daddy's girl) and I do not want he to have to go through that as she is a very well adjusted child. Any help would be appreciated. I do not want to break her heart by telling her she cannot have her daddys' last name when we marry without viewing all routes.