It's Saturday, 6:00pm. They make excuses to their friends, saying that they haven't really seen each other in many years. Now that they're each married to other people, and now can just be friends, they're gonna catch up over dinner out. No one finds this too odd - after all, many times they've been here together, it's been just as friends. They leave, and head out to her car.
But instead of going out for food, they simply drive around back of the building and slip inside to his room. His roommate can probably be counted on to be gone for at least two hours, so they have time.
The room is small and cramped, but adequate for their plans. She gingerly sits on his bed, and he joins her. Eventually, he lies back, and she reclines down off to his other side.
They keep talking, idly, but the conversation takes a more suggestive edge. He stretches, putting an arm out to the right side. After a moment, she snuggles closer to him, head on his arm, hand on his chest.
Her hand starts idly stroking, first just the chest, then down in bigger circular paths to his stomach. Then she reaches lower.
First, she just strokes the upper legs, the inside of the thighs, teasing a bit, before crossing to the middle. She feels a hard bump there, and first just passes over it as it was nothing, continuing the wanderings of her hand. But before too long, she moves her hand back to the hard bump, and stays there.
Then she begins by lightly but firmly rubbing the spot, slow and steady. As time passes, though, she starts stroking in a more determined fashion, moving up and down along the clearly defined line. The bump grows harder.
She slides her hand up and begins unfastening his pants. Seeing she has difficulty, he reaches down to do it for her. She slips her hand in, under the band of his briefs, and begins to climb in.
She finds what she's looking for quickly, a soft, smooth head, connected to a turgid shaft. Not yet having complete mobility, she starts by playing with the tip. She strokes it with her fingers, grabbing lightly between her fingertips, and pulls up lightly, as though trying to gently squeeze its juice out of it. She pinches and twists, lightly but firmly, twirling her fingers around the head, curling them under the lip and catching on it as a she pulls up.
Eventually, she indicates he should remove his pants, which he does, accompanied by his undergarments. His cock springs free, standing straight up, pointing at the ceiling. He settles back down again, resting on the bed.
She reaches over and outright grabs the shaft, first just holding it firmly for a second, feeling its pulsing. Then she starts to slowly move her hand up and down, caressing the shaft, stroking its length. Before too long, her hand is sliding up even further on its way up, lightly pulling her fingers up over the tip. She knows that's quite sensitive, so she stays conscious of his reactions, judging and changing her firmness and speed accordingly.
On the downswing, her hand starts brushing over his sack, occasionally giving a gentle squeeze and stroke of the gems wrapped inside. Her hand starts moving more strongly up and down the shaft, attempting to catch extra skin on her way up, so as to rub it, and not her fingers, over the sensitive tip. Every two or three passes, she twirls her fingers around the tip, giving it a gentle tug, but not often enough for the sensitivity to be too much.
His breath becomes deeper, steadier, and she judges it's time to change tactics. She removes her hand, climbs onto her knees beside him and, reaching her left hand across his body for support, leans her face down, right hand free.