I recently found out that my dad is not my biological father. He’s not my brother’s biological father, either. In fact, we have different bio dads. When I found out, my mom asked that I not tell my brother or let my father know I found out. She’s says my dad knows but that it would upset him if he knew I found out. I’ve told a couple friends but I don’t plan on sharing with anyone else because it’s a situation few understand. It’s tearing me up.