Chrissy moaned again, running a hand through his hair, unconsciously rocking her hips so she'd push against his tongue more. The other hand found one of her own huge breasts, and began gently squeezing it over her sweatshirt. "Tell me... tell me more," she begged with her eyes squeezed shut, desperately imagining the filthy situation. "Tell me what it would be like if he... if he caught us."
"You want me to tell you exactly how I think it would happen?"
She nodded eagerly, eyes still closed.
"Well, I'd lift you up and push you so your back was against the wall, and I'd stick my cock inside you. I'd be rough and rip off that sweatshirt so I can see those big, beautiful tits of yours. The ones that drive me crazy. The ones that I bet drive him crazy."
Since he was busy talking, her hand found its way to her clit and began rubbing it as he continued to finger her.
Kevin continued. "And he'd come home, all sweaty from the gym. And he'd see us, right here in the common room. He'd walk in and see us right away, me fucking you against the wall. But we wouldn't stop, would we?"
She shook her head no.
"No, we wouldn't stop. I'd be facing the wall but you'd be facing him over my shoulder. Maybe he'd watch from the couch for a little while, but then he wouldn't be able to resist, would he? Not when he sees how you're looking at him. Because you would be looking at him, wouldn't you?" Kevin felt himself get even harder, if that was even possible.
She nodded to this idea.
"And he'd see how bad you want him, and he'd see that I'm not making you cum, and he'd offer to step in and help out. He knows he can make you feel good. So I pull out of you, and he pulls off his shirt and pulls off his shorts and walks over to where you are on the wall and starts kissing you."
Chrissy moans. She's close.
"He's pressed against you. Do you think he's as hung as he acts? Or is he all talk?"
"Beth says..." Chrissy gasps, feeling like she was drowning in the upcoming orgasm. "Beth told me once... he's... huge."
Of course, thought Kevin. He also felt like he might cream his pants. For reasons he didn't understand yet, this absolutely filthy conversation turned him on to no end.
Without thinking too much about it, one of Chrissy's feet landed on his crotch as he sat below her. She felt how hard he was against her foot and was encouraged that Kevin was loving this too. As she squirmed with pleasure, she gently rubbed her foot up and down the cock trapped in his jeans.
"So he puts it inside you, and it's like nothing you've ever felt before. He starts fucking you gently- but it's not like me, barely pushing you against the wall. He picks you up, just like in that chair..."
"Yes..." she moans, her orgasm agonizingly close. Her foot kept rubbing as she squirmed- Kevin was certain she wasn't even meaning to do it. Kevin's voice began to waiver- he worried he might actually cum in his pants.
"He's... he's got you in his arms and he's fucking you, he's fucking... fucking you like his own personal... slut..." He couldn't believe how close to cumming he felt, even though all Chrissy was using was the back of her foot.
"Yes!" she moans again, louder. Her foot pressed against him more.
"He's bouncing you on his dick and... driving you deeper and deeper onto his cock, making you feel things you've never felt before, making you cum so easily-"
"YES!" she screamed, finally getting her orgasm, which was easily the largest Kevin had ever seen. As she bucked, she pressed her foot against Kevin's cock one final time, and Kevin could not help it- cumming in his pants in what was one of the best and simultaneously the worst orgasm of his life.
Her whole body squeezed tight as she was rocked from the orgasm, and then with a few deep breaths, slowly but surely came down from the highs and opened up her eyes.
Once she opened her eyes, a sudden wave of humiliation washed over Kevin. He had just cum in his pants while his Girlfriend was imagining fucking a different guy- what was wrong with him?
"That was amazing. So, so amazing," said Chrissy, dreamily. "You are the best boyfriend in the whole world, you know that? Literally the best." She panted a few more times. Before leaning up. "Now that you've given me such a nice orgasm, maybe I can return the favor..."
Kevin felt heat in his cheeks. "Um..."
"What do you want, baby? I'll do anything, anything, you want after that, you name it, I'll do it. You want to fuck my tits, baby? I know you love that. You want to fuck my a-" She looked down and realized. Her sexy tone was suddenly replaced by shock. "Did you... did you cum in your pants?"
"Uh, yeah," Kevin said, blushing. "I kind of... yeah, I did."
"Just then?"
"Yes."
There was a shocked pause. Chrissy was baffled, but didn't want to hurt Kevin's feelings. "Oh. Because of... was it something I did, or...?"
Kevin suddenly felt the need to defend himself. "Well, it's... you were having such a great time, and you looked so hot, and your foot... your foot was pressing against me."
"Yeah?" asked Chrissy, not convinced by that explanation. "Just the foot against you did it?"
"Yeah, it was just... I just was really sensitive tonight."
Chrissy looked deep into his eyes. "That's it?" she said, dubiously. "Are you sure it wasn't something else?"
Kevin's throat was dry. "Like what?"
"Like maybe," she said, her tone inquisitive and mischievous, "You liked that story you were telling too?"
Kevin felt himself blush even more.
"Did it turn you on, hmm?" Her eyes were intense, locking to him, studying him. "To think of your girlfriend... acting like a slut with Mark, hm? To think of him rocking my world and taking what's yours?" Kevin couldn't believe it- despite having orgasmed a mere minute ago, he felt himself quickly getting hard again. She saw this in his jeans and her jaw dropped. "It is that, isn't it! You loved it too?"
Kevin was a whirlwind of humiliation and arousal. Was that it? "I... guess I did..." he said earnestly.
"Stand up," she said, taking charge. As he did so, she slipped off her sweatshirt, revealing her massive tits contained by one of her custom-made bras. He moaned at the sight of them- no matter how many times he saw them, he loved them each time.
She leaned in, his crotch right in front of her face. She took a moment to study the cock tenting in his pants and the cum stain near it, before she turned her eyes upward. One hand began very gently rubbing his cock through his pants