I don't know what to do. I want my grandfather to walk me down the aisle because he has raised me, since my mother passed away when I was a child. I feel bad because I know this will hurt my father and his side of the family but my father has been estranged my entire life and only comes around when he feels guilty. I don't want to seem like I'm bitter or mean, but I feel that my grandfather has been my father for the past 28 years. What should I do?