I come in and start putting on my suntan lotion to go tanning, we've gotten close since step-mom cheated on you and left. You help me after a bit by putting the lotion on my back, I notice that your dick is really big in your pants but I don't say anything, I'm shocked... A bit later and I'm looking for my sunglasses before I go tan, but accidentally walk in on you stroking your dick with my panties!!!! I'm so confused and embarassed. I run away and think about it in my room. It was hot but I'm feeling so confused..... Later that night and i've avoided you all day. I can't stop thinking about your cock step-daddy. I start touching myself to the thought of him and use my vibrator until I cum (actually)..... [for the last 10ish minutes] I sneak into step-daddy's bedroom and take out his big hard cock, start sucking on it until he wakes up. I ride him and then we fuck in missionary until he pulls out and cums on my pussy.. We're closer than ever now.