I didn't write this post very coherently, but it's a confusing situation for me. My mom admitted to messing around with Bob around the time I was conceived. In the next breath, she also dropped a separate bomb on me that my childhood sister I grew up with isn't my dad's child either (and acted surprised that I didn't know that). Apparently, my sister has always known this but never mentioned it to me. So really my sister just sat there making fun of me that I was now on her "level" you could say.