She knew that if they did it as they had last night, they would wait an interval for her to fall asleep. And probably a longer interval tonight, since Ann had made it clear that morning that she knew Kathi had overheard them.
So she tried to stay awake. But it was impossible. She was drowsy. The longer she waited, straining her ears, the more she grew convinced that they weren't going to do it tonight. Finally she fell asleep.
She had a dream that a naked man was in bed with her. She felt his hands exploring her body. She could feel the erect meat of his cock pressing against her warm thigh. She sighed and stretched and suddenly awoke with a start as she felt a hand probing her pussy.
"Oh!" she gasped, waking up quickly.
"Shhhh! Quiet!" Brian's voice whispered.
"Brian!" she exclaimed in a whisper. "What are you doing here?"
"Shhhh! Ann's asleep. I thought we could… you know…"
She reached down, and withdrew his hand from her cunt. She clamped her thighs shut. "We can't do that! Not with her in the other room. What if she wakes up?"
"She won't. I gave her a sleeping pill."
"Just so you could come in here like this?"
"She was very tired."
"I don't believe you."
"Is it so bad that I should want you Kathi? After all, even you admitted it was good."
"It was beautiful." She shivered as she recalled it. She really did want him to fuck her again. Right now. Quickly. But it was too dangerous.
"It was stupendous," he murmured.
Brian slid his hand up her soft belly to her breasts, fondling them tenderly. He gently pinched her thick nipples until she began to sigh.
"But you know it was a mistake," she whimpered. "A surprise. We never would have don't it if we'd known."
"I know. But we did do it. There's no going back."
"It's wrong, Brian," she murmured. Her body responded to his caresses in spite of her reluctance. Her breasts tingled, her cunt moistened. She was so horny. She needed to be fucked so badly. And she knew he could do it good to her.
"It's only wrong if you make it wrong," he murmured to her, pushing her nightie up around her neck. "I want to suck your nipples."
Kathi's mind reeled. She was dying to feel his mouth on her. But she feared that if she let him, it would be all over. She would give in.
"Rose don't, Brian. Please don't. You're making it so… so hard on… me…"
She gasped with pleasure as his lips found her breasts in the dark. He squeezed her firm boobs and sucked her throbbing nipples until she was squirming wildly.
"We really can't do this, Brian," she panted.
"Really. I mean it. You've got to stop."
"Do you want me to stop?"
"No. God, no! But we have to."
"Why do we have to? Don't you like me to suck you like this? And like this?"
"Oh! Oh Jesus, it feels good!"
He worked her thighs apart with his hand and slid two fingers into her flooding cunt again. "Feel how wet you are for me?" he whispered.
"I know, I know!" she whimpered. "But oh God, I make so much noise when I come. She's sure to wake up."
"I told you she's out for the night."
"I'm afraid."
"There's nothing to be afraid of," he soothed her. "I want to fuck you so bad. A long slow good one."
"I want you to fuck me, too. But I'm afraid I'll scream. I really do."
"You can bite on the edge of the blanket." Even though the smoldering fires in her body were growing more intense by the second, Kathi couldn't help giggling at that. "I'll probably choke to death," she whispered. "How'll you explain that?"
"I'll have to say you O.D.'d on jerking off," he joked back.
"God, that feels good!" Kathi moaned. "This? What I'm doing to your cunt? Or this, what I'm doing to your nipples?"
"Ohhhnnnn… both of them. All of it!"
Brian crawled between her spread thighs, but Kathi quickly clamped them shut again. "Kathi, baby."
"No, no, no! I want you, I really do! But Brian, she's my sister! Can't you arrange for us to be alone? Tomorrow, maybe?"
"But I want you now!"
She found his hot stiff cock with her hands and squeezed it. "Look, baby, as far as I'm concerned you can screw me insane with this beautiful thing. But only when there's no danger of her catching us. Okay?"
But Brian didn't want to take no for an answer. He tried to pry her thighs apart with both hands. The struggle to keep him from fucking her had a reverse effect on Kathi. It excited her even more, though she was still determined not to do it.
"No, no!" she panted as she tried to squirm away from him. "Brian! You can't just rape me, you know. That would be even worse. What if she caught you raping me?"
"I'd say you begged me."
"Brian, please!"
He sulked and rolled off her.
She felt sorry for him. She wanted him just as much as he wanted her. But it must be worse for him. She had read about how men actually hurt if they couldn't came. She was seething with frustrated lust herself, but at least it wasn't physically painful.
"Poor darling," she said, stroking his forehead. "I'll bet you really need to come, after all this. Don't you."
Brian nodded. "Really, she won't hear us. I swear it."
She embraced him and snuggled him against her warm naked body. "Think of how good it will be, because we have to wait for it."
"That's no help now," he muttered.
"I know, I know. Tell you what. Let me suck you. You can come in my mouth."
He smiled slowly and rearranged his body to make it easy for her. Kathi nestled her face in his groin and took his rearing prick in both hands. He did have such a beautiful big one. She licked it and heard him gasp. He must be very close. That's good, she thought. We're still skating on very thin ice, even doing this. I know he said she's asleep. But I'm scared anyway.
"Baby, oh baby, come in my mouth!" she whispered, sucking his prick between her lips. She was determined to give him both the best and the fastest blowjob he had ever experienced.
She didn't have long to wait. It was true, Brian was very close. She sucked him expertly, pumping the stiff stalk of his cock at the saint time. Oh come, come! she keened to herself. Let me drink it, Brian, come fast, come fast!
In no more than a minute he groaned and came. The warm creamy jism filled her mouth. Happily she gulped it down, still sucking softly, swallowing every last drop of cum he would give her.
After the orgasm even he became nervous. She was still kissing and licking his prick, but she could feel the anxiety in his body.
"You'd better go back in the bedroom," she whispered.
"I know."
She kissed him. "I'll be dreaming of you fucking me."
"I'll try to arrange something tomorrow."
"I'll cross my fingers."
"And thank you for…"
She smiled and kissed him again. "It's the least I could do," she whispered.
But she didn't get a wink of sleep all night.
Ann was home alone. Brian was at work, and Kathi had gone downtown alone to shop, saying that she liked getting to know the city by herself. "I don't need you to chaperone me," she had told Ann. Fine, Ann had thought. Maybe Kathi would find some man to fuck her. She needed it, after the breakup of her affair with Mike.
Ann was still toying with the idea of getting Kathi together with Joe. She really didn't want to share him with her twin. But it would only be once or twice, before Kathi went back home. And what better gift could she give to her sister – her very horny sister – than that magnificent once-in-a-lifetime cock of his?
She tried not to think of it because even that made her horny. Brian had not balled her last night. All in all, that was all right with her since Joe had nearly fucked her to death earlier in the day. But for some reason she had fallen quickly to sleep. Lately she seemed to love to fuck so much that she kind of regretted not having her husband yesterday too, on top of Joe.