The characters in this story are over the age of eighteen.
*****
Alice was washing up at the kitchen sink when she felt David's arms round her waist. This was the moment she had dreaded for a whole week. Her husband Ralph was away for a fortnight on a business trip, or so he said, and Alice was alone with David. There had been a lot to sort out in her mind since the event that had taken place the previous week, and her only surprise at David's approach was that he had taken so long.
She turned in David's arms to face him and was about to speak when David said, "Do you still love me?"
He kissed her and for a few moments she let his lips linger on hers, but as she felt his tongue probing for entrance to her mouth she pushed him away, freeing herself from his arms.
"Don't kiss me like that," she said firmly, "you know you shouldn't."
David was not to be so easily deterred. He too had done some thinking since last week and had concluded that he had never had such a wonderful experience before and he was more than ready to repeat it.
He put his arms round Alice again and said, "You didn't mind me kissing you like that last week."
"That was different David," Alice protested, "You caught me at a vulnerable moment; I was very angry with your father, I'd had row with him over leaving me again for one of his business trips and...and I suppose I wanted revenge, and so I...we..."
"It wasn't just revenge though," David said. "You told me it was the most beautiful experience in your life and you loved me, and you know damned well that father isn't on a business trip unless fucking your secretary in some fancy hotel can be classified as a business trip."
He pulled Alice closer and she could feel his erect penis pressing against her lower abdomen.
"Stop this, stop this David," Alice cried out, "we can't."
"You didn't tell me to stop last week," David grinned, "in fact you told me not to stop."
Alice continued to struggle in his grasp but he was much bigger and stronger than her and she knew that if it came to a physical contest she would be the loser, and so she tried to calm the situation.
She ceased struggling but she was trembling. She made an effort to control her limbs and steady her voice as she said, "That was last week and I wasn't really myself, but now it's this week and I've had time to think. I know how wrong we were and it must never happen again."
David who seemed to be affected by the cessation of her struggles relaxed his hold on her saying tenderly, "How can anything so beautiful be wrong?"
"But it is, it is," Alice objected, "people are put in prison if they're caught doing it."
"Then we have to be careful nobody catches us. Its something between us and nobody ever need know," David replied.
"Listen darling," Alice said, striving to keep her voice steady, "we may have got away with it last time, we won't know that for a while, but even if we have got away with it we might not another time."
"Got away with?" David queried.
"Darling, all that sperm you put it me, I'm still fertile and I could easily be pregnant, and you know your father had a vasectomy so it couldn't possibly be his, it would have to be yours."
"You said father hasn't been near you for ages."
"And that's true," Alice said a trifle tartly, I didn't lie, and so even if he hadn't had a vasectomy it would still mean he couldn't have impregnated me." She paused for a moment and then went on somewhat hesitantly, "And...and that's another reason why I had sex with you, I've been so frustrated, and I needed comfort, and we were alone and..."
"No," David interrupted sharply, "you're not being honest. Last week we both admitted we'd wanted each other for a long time, and that was before this trouble with dad."
"Yes," Alice admitted reluctantly, "I did want to have sex with you before I realised your father was having an affair, and you made it fairly obvious you wanted me, but we controlled ourselves, and that's what we must do now, so let go of me and we can talk about it if you like, but that's all; no more sex."
* * * * * * * *
It was true that mother and son had been sexually drawn to each other ever since David had begun to assume the mantle of manhood and she had glimpsed his erect penis a few times.
It was also true that they had made love at a time when she was distressed and suffering intense sexual frustration. More than that, it had been Alice who had seduced her son: It was she who had kissed him; she who had opened her mouth to receive his tongue; she who had exposed her breasts to him and urged him to fondle them and suck her nipples; then she had drawn his hand down to feel her wet genitals to let him know she was ready for him.
When she had exposed his pre-cum dripping penis and began to stroke it, it was clear she had her son under her control, and at her suggestion they had stripped and ended up in the 69 position.
She had washed her son's face with her female love juice as she received his warm young semen into her mouth, and even as she thought that was end of it, after a brief pause it was clear they were both ready for more. David was begging her to let him penetrate her vagina, and that accorded with his mother's wishes.
They had ended up with Alice lying on the living room carpet, David on top of her, and as they both entered upon intense orgasms she felt the convulsions of his penis as he drove his young seed deep into her rapaciously clutching vagina, as if she would drag the sperm out of his testes until they were empty. In this she was unsuccessful.
After a shower they retired to Alice's bed and there copulated twice more; long slow sexual couplings until deeply satisfied they finally fell asleep.
It was when Alice awoke the next morning and found her self alone in the bed that the events of the night began to trouble her. In her love for David and her own urgent sexual need she had allowed her son to fill her with his sperm. It had been wonderful, the most beautiful experience in her life, but he might have impregnated her.
In other circumstances, in a situation where there was no Ralph to be considered, she might have welcomed being fertilised by her son, indeed at the height of her orgasm she had even begged him to fertilise her. But there was Ralph to be taken into account, him and what seemed to her like a myriad of other problems.
The fact that David made no approach to her for sex had led her to resolve that there should be no more sex between them. Her one great problem was that having experienced the most satisfying sex with her son, would she be able to resist him if he did make an approach?
* * * * * * * *
David still had his arms round his mother holding her close, but for a moment he relaxed his hold and moved to stand beside her, one arm still round her waist. He now had one hand free and with it he began to fondle one of his mother's breasts.