My Dad Is Liam Payne

I have always wondered why people came up to me and asked, "You're Libby Payne, right?" And when I answer to them "Yes." They start freaking out and then they walk away as if nothing happened. I've been getting a feeling my father, Liam Payne is hiding something from me like who my mother is, who he really is. I know for a fact he isn't some kid of business man. It's been fifteen years since I was born and I think I need to know something. He's tried telling me stuff, but he ends up freezing up and then he walks away. I don't even think my brother knows and he's 16, one year older than me. You'd think he knows something, but he doesn't. I need to know this secret.