Kim's Obsession, My Gain
Copyright© 2026 by Incrediblehunk77
Part Four: The Hallway
Incest Sex Story: Part Four: The Hallway - Kim, a driven single mother, has a new fantasy in her sights: watching her boyfriend fuck her 18 year old daughter.
Caution: This Incest Sex Story contains strong sexual content, including Ma/Fa Ma/ft Fa/ft Lesbian Heterosexual Incest Mother Daughter
Rob lay on Kim’s bed, his chest heaving, his mind a mess of conflicting emotions. He’d just come harder than he had in weeks, maybe months, and it was because Kim had been whispering about her daughter, because he’d been imagining Katie asleep in her room, because some part of him—a part he’d tried to kill, to bury, to ignore—wanted exactly what Kim was offering.
Kim stood up, dropping the robe. She was naked now, her body flushed, her nipples hard. She walked to her dresser and opened a drawer, pulling out a large t-shirt—one of Rob’s, actually, that he’d left over months ago and she’d claimed as her own. She pulled it on, the fabric hanging off one shoulder, coming to mid-thigh on her.
“I’m going to check on her,” Kim said, her voice casual, as if she were talking about checking the mail.
“Kim, wait—” Rob sat up, his post-orgasm clarity bringing with it a wave of guilt and uncertainty.
“Shh,” Kim said, pressing a finger to her lips. She walked to the door and opened it, the hallway beyond dark and quiet. “Stay here. I’ll be right back.”
She slipped out, closing the door softly behind her, and Rob was left alone with his thoughts and his shame.
He should leave. He should get dressed, walk out, drive home, and never come back. This had gone too far. Way too far. Whatever game Kim was playing, it was dangerous, destructive, potentially ruinous for all of them. He was forty-five years old. He was supposed to be the responsible one. He was supposed to protect Katie, not fantasize about her, not let her mother manipulate him into—
The door opened. Kim slipped back in, her eyes bright, her cheeks flushed.
“She’s asleep,” Kim whispered, closing the door and locking it. “On her stomach, just like I said. The covers are kicked off—she gets hot when she sleeps. Her shirt rode up. I could see her panties, Rob. Little pink ones. And there was ... there was a wet spot.”
Rob’s cock, which had started to soften, twitched back to life. “Kim, we can’t—this isn’t—”
“She’s dreaming,” Kim interrupted, climbing onto the bed, straddling his lap. She was warm, her skin soft against his. “I watched her for a minute. Her hips were moving. Grinding against the mattress. She’s having a sex dream, Rob. Probably about you. And she’s so wet. The spot on her panties ... it was big. She’s ready for you. Her body is ready.”
“Even if that’s true,” Rob said, his hands finding Kim’s hips despite his protests, “even if she wants it, even if she’s dreaming about it ... she’s asleep, Kim. She can’t consent if she’s asleep.”
Kim leaned down, her mouth finding his ear, her breath hot. “That’s why I’m here,” she whispered. “I’ll guide you. I’ll show you. I’ll make sure she loves every second of it. And when she wakes up ... when she’s already feeling good, already close ... she’ll want more. She’ll beg for more. I’ll make sure of it.”
Rob groaned, his resolve weakening. Kim could feel it, feel him hardening beneath her, and she ground down against him, making them both gasp.
“Just come look,” she coaxed. “Just see her. See how beautiful she is. How ready. And if you don’t want to touch her, if it’s too much, we’ll leave. We’ll come back here and fuck like we always do, and I’ll never mention it again. But I think ... I think once you see her...”
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