Ask if she's ready to be more "intimate"

Andi's pretty (and talented, you remind yourself) mouth breaks into a small grin as she easily pulls the oversized t-shirt over her head and lightly runs her fingers over her breasts. You watch with genuine interest as her nipples harden under her manipulations, your cock stirring with the sudden sexual energy in the room. She spreads her legs slowly, giving you the view of the nice trimmed bush of hair atop her pussy, which is already glistening with excited moisture. Holding your gaze with her suddenly intent eyes, she moves her hand slowly towards her pussy, extending her finger so that it lightly brushes her outer lips, beginning to swell at her own movements. Her head turns slightly and you hear a gentle intake of breath as she makes contact, but she still looks deep into your eyes. Her hand moves farther down her body, and in a few moments, her middle finger teases the entrance to her pussy. She looks at you and shrugs, sandwiching her substantial tits between her arms, causing a prominent display of flesh and nipple.

Without thinking, your hand finds your stiff dick and begins stroking it slowly. Andi giggles slightly and follows your lead, plunging her middle finger deep into the confines of her wet pussy. Dumbfounded, you continue to stroke your cock, then suddenly stop, not wanting to blow your load just yet. Meanwhile, Andi pumps her pussy slowly, then pulls out her finger and without warning brings it to her mouth. In a gentle reminder of last night, Andi's sensuous lips close around her middle finger, and she pushes it in slowly, only to pull it out again, this time covered in her saliva. Your groan of pleasure inspires Andi to beckon you over.

She grips your cock, strokes it once, and looks down towards her hand. Without saying a word, she guides you gently to her pussy, lodging the head of your dick into it. Andi lay down, and begins lightly caressing her breasts, looking up at you expectantly. Still distracted by the show she's just put on, Andi helps along, pushing with her hips so your cock is buried halfway. The warmth of her pussy is incredible, and you suddenly feel her pussy tighten as she begins squeezing your dick. Barely noticing, you begin thrusting forward, and Andi sighs with pleasure. You go slowly, amazed at how tight Andi's pussy feels around your cock. You look down at Andi, who looks back at you, a spark in her eyes. Her tits are shaking slightly with your pushes, and at that point you have no doubt that this girl is one of the sexiest you've ever met. Noticing your gaze, Andi wraps her hand around her right tit and gives it a good shake. You thrust even faster, and Andi bites her lip as you hit a sensitive spot.

Motivated by Andi's obvious desire to please you, you pick up the pace, watching with even more interest as her breasts shake more and more. You know you can't last long as Andi bucks her hips, but you want to ensure you get her off.