My daughters biological father took off when I was only a few months pregnant and has no contact with me or her since then. I know that is considered abandonment and so my boyfriend now of 3+years would like to adopt her. I would really like for her biological father to not be able to ever in the future be able to change his mind and decide all of a sudden he wants a part of her life. Would it be better to get in touch with him and have him sign over his rights? Or will it be okay to leave it alone and just have her adopted by my boyfriend? If it makes a difference he is not on her birth certificate, I am listed as the only parent and she has my last name.