Collaborative sex stories let us write the plot together

(Her Secret Fantasy, continued by JustAName...)

“Don’t think I didn’t notice everything,” your step-sister Amy says. “I see the cum floating around and I see your nice hard-on. I was called here for you to fuck me. Well here I am!” She takes her swimsuit off.

She moves over and takes your swimsuit off. You notice your girlfriend and Monica take theirs off too as they sit back and watch the action. Amy takes your hard dick in her hand and starts stroking. You reach out and start fingering her.

After a while she lies back against the side of the pool and puts your tip at her entrance. She rubs your tip up and down her slit before pulling you inside with her feet. You look down, and seeing your pulsating, rock-hard dick back inside your step-sister’s shaved, tight pussy is amazing.

You start thrusting in and out as Amy moans. The warm water feels amazing and she starts to cum. The feeling is too much and you burst into her pussy.

Both Rachel and Monica cum hard too, as you can hear their moans.