Yes...and Kelly makes sure it happens.

Kelly looks at the two of you lustfully. "You're going to fuck her, John. And me. You're going to fuck us until we scream...and then you're going to keep fucking us."

Katie leans down and kisses you violently, and you feel her squirming on your lap. You open your eyes to see Kelly yanking at Katie's jeans, pulling them off and tossing them onto the floor. She slides next to Katie and reaches down, unbuttoning and unzipping your jeans as Katie moans, pushing her tiny cotton panties against your stomach as she pushes her tongue into your mouth. Kelly pulls your jeans off as well, your boxers pulled down with them, revealing your fully erect cock.

Kelly grasps your shaft gently, breathing heavily. "Oh god, Katie, it's so big. You're going to be in heaven..." Katie lifts herself off of you momentarily, then pushes her panties aside as she slides onto you, taking your raging cock into her warm, wet pussy. She looks into your eyes with a combination of surprise and lust, and she begins to bounce gently on your thick member.

Katie bounces harder and faster, responding to your own upward thrusts. "Oh, oh god John, I've wanted to fuck you for years, and now that you're inside me...I've never been more fucking hot."

Kelly watches with similar lust, and hops on the couch next to you. She pulls Katie's face to her own, kissing her aggressively. She starts removing her own jeans, revealing a tight, short pair of pink boyshorts. She breaks her kiss with Katie, pressing her tits together for you. "John, do you want to fuck your sister too?"