My flexible athletic girlfriend did not expect that I have a knob that is this large

I met my girlfriend in the gym one day. I guess that’s the common interest that we hooked up over. You know what they say about gym guys though. Usually, they work on their body 'cuz they have no thing to show for down there. Well, I’m about to prove that stereotype wrong and my girlfriend is about to find out how lucky that babe is that that babe got together with me. One day I catch her doing splits in the living room. She’s really good at those and I keep thinking that I could put her flexibility to work in some other ways. So, I come to her and I pick her up with my core strength. That babe seems really impressed, but that’s not all that I want from her. I lift up her shirt to reveal her tits. I start sucking on 'em in hopes of getting her in the mood. I’m already there as far as I’m concerned, just awaiting for that horniness to hit her as well. When it does, I just now place her on her knees in front of me. I wait for a moment and then pull out my dick as I can watch that she’s anticipating it. When I do pull it out though, this babe is simply amazed by the gigantic size of it. The sexy babe really can’t make no doubt of her eyes that my dick is just that massive. Once she’s passed the initial stage of the shock though, I want to get down to action. The playgirl starts blowing me really nicely. That babe starts off slow but as time goes on that babe moves her head up and down faster and faster. She really has a good technique here and I feel just amazing during the time that she’s doing it. I can’t really get sufficiently of this though, so I need to move on to something stronger. I want to see how this babe can handle my dick inside her tiny little pussy. My nude girlfriend gets on the couch and I cant wait to stretch apart that soaking wet cum-hole with my large dick. That babe lowers her muff onto my cock, I aim my hard cock between her slippery lips, and she lets her weight slide down onto it. Once my dong is deep into her body this babe starts riding me hard. I fuck her for a long whilst as I listen to her moans of pleasure. After that, I place her so that she’s lying with her head on the floor and her tucked legs up on the couch. I want to bury myself as deep as I can inside her so that’s what I do. Afterwards, I let her ride me until I cum.