Karen was laying in bed suffering her husband's intrusion, allowing him to fuck her with his typically bland missionary style. He was grunting and breathing heavily against Karen's neck, completely oblivious to his wife's disinterest. He lasted about two minutes, kissed Karen on the cheek while muttering something about loving her, then rolled over to his side of the bed. Karen said she loved him too, though more and more Karen's words had less meaning behind them. They sounded hollow to her.
Little did her husband know that Karen was having an affair behind his back. Every day she felt less guilty about it, too. The sex they just had was the first time Karen's husband had shown any interest of her body in over a month, if one could even call what they just did 'sex'.
Slipping out of bed, Karen went into the bathroom. Why should she feel guilty for a husband that barely paid her any attention? Looking at herself in the mirror, Karen knew why. Because the man she was having an affair with was their eighteen year old son, Dylan. Using the running water of the sink and a washcloth, Karen cleaned herself of her husband's semen. The feeling of his mess inside her revolted Karen, somehow. She wanted it to be Dylan's cum. How she wished it had been her son that had fucked her!
She thought about his big cock constantly. Fantasies of being filled by it dominated her waking thoughts, as well as her sleeping dreams. But so far Karen had limited herself to jerking Dylan off. Guilt had prevented her from doing more, a twisted morality that kept the incest from being complete in her mind. But after tonight, after her husband's pathetic attempt at sex, Karen didn't know how much longer she could hold out. She knew one thing...she wanted to be with Dylan again, tonight.
Putting on her nightgown, and brushing her long blonde hair, Karen thought about the past month. She had been visiting her son's room nightly to masturbate him, and often masturbated herself in the process, after Dylan's father fell asleep. Their encounters weren't limited to bedtime anymore either, as Karen quite often would also jerk Dylan off when he'd get home from school (when he didn't have to work at his part-time job). Sometimes Karen's rational mind told her things had gone too far, that she and Dylan would never be able to continue such incestuous activities, but then she'd get his cock into her hands and see the love in her son's eyes and Karen would melt.
Glancing back into the bedroom, Karen heard the heavy breathing of her husband's sleep. The bastard, she thought. All he seemed interested in anymore was work. She regarded herself in the mirror once more. It's not like Karen wasn't attractive. At 40 years of age she had the body of a woman ten years younger. Sure, her breasts weren't as perky as they once were, and a few more wrinkles could be found here and there, but as a catalogue model Karen kept herself in great shape. She exercised regularly and kept her figure nice and tan. Men turned their heads constantly. Dylan would practically drool every time he saw her naked. Why not her husband?
"Fuck him." Karen said to her own image in the mirror, tossing a hand through her hair. "If he's not interested in you, there's a hot young guy upstairs who is."
Dylan was up in his bedroom wondering what could be taking his mother so long. He had to work earlier that day, so didn't get his afternoon hand job. He tried to distract himself by laying in bed with a book but it wasn't working. Dylan thought about his mother all the time. She was so sexy, so attentive to him, and his feelings for her had grown well beyond the typical parent-child bond. Dylan often told his mother how much he loved her, but he wondered if she knew how much he really meant it. Yes, he loved her like a son loves his mother, but he also loved her the way a man loves a woman. He was IN love with her.
Or was it just lust? Dylan was often confused about his feelings. He knew what they were doing was wrong, that it had to be kept a secret, and he feared that it would have to end. Dylan didn't want it to end, in fact Dylan wanted things to progress further. He wasn't interested in other girls anymore, he wanted his mom to be his lover now and forever, but Dylan felt forced to take things at a pace of Karen's choosing.
Dylan's thoughts were interrupted by a quiet knock on his door, and the sound of his mother's voice. "Dylan? Are you still awake honey?"
"Yeah mom, of course I'm still up. What took so long, are you okay?"
"I'm sorry sweetie." Karen said, walking into Dylan's room. "Your father took longer than usual to fall asleep."
"I've missed you. Work was impossible today, I kept thinking about you."
Smiling, Karen sat at the edge of the bed. "You're such a sweetheart, you know that? I've missed you too. Do you need me to jerk you off tonight?"
Dylan nodded, "Please? You know how horny I get when I can't be with you after school." He slid his shorts off, revealing an already semi-erect penis.
Karen swallowed and felt it catch in her throat. Every time she saw her son's gigantic penis it sent a thrill through her body that seemed to explode right between her legs.
She teased, "I know baby. I think you get more horny every day."
Blushing, Dylan said "I guess I do." He smiled, teasing back "It's your fault though."
Karen laughed. "It's okay. All teenage boys are the same. I swear you all have perpetual boners. Here, let mommy see what she can do."
Before Karen could reach out and take Dylan's cock into her hand, he said "Could you take your nightgown off, mom? I just love looking at your sexy body. It's beautiful."
Oh god, Karen thought, this boy is so sweet. "Of course you can honey." She stood up and took her nightgown off, laying it gently over Dylan's desk chair. The way her son stared at her nakedness made Karen feel attractive and sexy. Karen loved the way he made her feel: desired. She sat back down and quietly began their nightly ritual of slowly stroking and rubbing Dylan's shaft to a full erection, enjoying the sensations of it growing thick and hard in her hand. By the time Dylan grew to his full girth, he always began emitting plenty of pre-cum for her to begin smearing all over his length.
"Your cock is so lovely, Dylan." Karen said, then she leaned over and kissed his thick mushroom head.