So, when my Dad was younger he used to date this girl. She suddenly broke up with him and he was sure it was because she was pregnant. He did everything possible to find out if she was, but she moved. So I may or may not have a sibling. The other problem is that my Dad doesn't want us bothering anyone, so I cannot look up the ladies name. Is there was a way of checking to see if maybe that sibling has looked or is looking to find their birth father. Like maybe her mom told her the last name and she is actively trying to find him. This is very confusing, but it is driving me crazy thinking I have another sibling I have never talked to