Thanks to LarryInSeattle for editing.
For any new readers, the basic story revolves around a sister and her twin brothers and their physical and mental link with each other. They've been joined by another couple. There has been male bisexuality in some of the other chapters. This one is primarily male on male, with the ladies playing a supporting role. If that isn't your bag: Go in peace.
All characters are over 18.
Enjoy.
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The girls exchange a look and then Julie lays one on Mark. The lucky bastard. When she breaks the kiss, she cups his face in her hands and they stare at each other. I'm starting to feel uncomfortable watching them. Somehow watching them share a moment of emotional intimacy feels more voyeuristic than watching physical intimacy. I look away when I see her blink back tears.
When I look over at Terry, he's rising from his chair. His dick is so hard it's standing almost straight up. I wonder what he is doing. Maybe he's had enough and he's heading to the bedoom to pound one out. No, he crosses the small gap between the chair and the sofa. He stops in front of Donna. I start to sit up. Is he fucking nuts?
I hear a soft whisper in my brain. I glance at Donna but she's eyeing Terry's dick. The whisper grows louder. I notice Julie staring at me. She smiles. The whisper in my brain becomes more coherent. I make out, "Come on sugar." It's not Donna's voice: it's Julie's. I'm confused. Julie's smile widens. I see Mark start to smile. He nods. What the fuck is going on?
"Yo, dumb fuck," I hear my brother say aloud. "You gonna sit there looking stupid or are you gonna accept the lady's invite?" He nods toward Mark, "And the gentleman's? All the blood in your dick?"
"Shut up Terry. Go on big brother. They're okay. They want you to." I hear Donna say. It's in my head because she can't speak. She's biting my brother on the side of his leg, not too gently either by the way he jumps back.
"What the fuck, sis?" he snaps.
"Quit being such a douche or you can go to your room and jerk off by yourself," she snaps right back.
"I wasn't being a douche. Jesus, he's sitting there all moon-eyed." His voice trails off as Donna's eyes go cold.
"It's alright Gary," Mark intercedes. "Of course you're smitten with Julie. I understand that. I also understand she can be attracted to you, that she can even be emotionally attracted to you but she loves me. I think you understand that as well, don't you?"
I nod and Mark nods back before continuing.
"The only concern I have is you'll want to take things beyond the physical, and beyond the bit of her heart she has to spare. Better to stop now if you don't believe you can settle for this, nothing more. You can't have her the way I have her." He reaches and squeeze's Julie's hand. "The way we have each other. Understand?"
Still, I hesitate. I glance at Donna, at Terry.
"I know about that as well. I never really knew my sister. If you ever meet her you'll understand why I can't fathom someone lusting after their sister. Then again, Donna wasn't my sister. Before today I couldn't imagine lusting after a patient, former patient," he adds before Donna can open her mouth. "I'm being to discover what you all share," he includes Julie in his gesture. "Just an inkling but even so, I can only imagine the power, the allure, of that type of closeness."
He sits back on the couch, one hand resting on Donna's naked back, the other on Julie's, seemingly finished with his oration.
"Sorry bro, sorry sis," Terry says quietly. I send him a mental "no sweat". Donna settles for leaning forward and kissing his belly. His dick is pressed against her chest, poking her under the chin.
Without further ado, she deep throats his cock and he moans as his hands find her head. As horny as I am, I pause to watch her sucking our brother's cock. At first she contents herself with using only her mouth. Her hands cup his ass cheeks. I discover that one advantage of a shaved head is there is no hair blocking the view. Her cheeks flatten as she buries his dick in her throat. They turn slightly, giving Mark a better view. He doesn't seem to mind being a witness to incest. He begins to stroke Donna's back.
She withdraws, swirls her tongue around his crown and begins to slide her lips up and down the side of his shaft, positioning herself so that we can watch. When Terry can't stand it any longer, he uses his hands to guide her mouth back over his dick. She lets him. For a moment she holds still while our brother mouth fucks her. He stops suddenly. He doesn't want to cum yet. We may be twins but I'm not sure I have that much will power. I think in his shoes I'd have been pumping my load down her throat by now.
Donna goes back to sliding her lips over his shaft, tickling the underside with her darting tongue. Mark is still rubbing her lower back and the top of her ass. Terry lets his hands fall from her head. He clasps them behind his back, a look of deep concentration on his face as he strains to hold himself back. I hear the sofa squeak as someone moves.
Julie kneels on the floor, her side pressed against Mark's shins. She joins my sister, sliding her mouth over the open side of Terry's cock. She pauses when her cheek touches his hip and her tongue plays with his right nut. Donna has moved back to the head. She takes his cock into her mouth and gives a few quick bobs as Julie slides her mouth back up his shaft. When they meet, they ignore his cock and kiss for a few minutes. When they break apart, it's Julie's turn to bob up and down on my brother's dick. They take turns this way, stopping for long moments of kissing, letting Terry settle down, keeping him right on the edge but not letting him slip past the point of no return.
I see Mark reach for Julie's arm. He urges her back to the couch. I wonder if I've waited too long and he's come to his senses. She doesn't resist. They exchange a look. She shrugs and sits beside him.
In an evening full of twists and turns, nothing surprises me more than Mark slipping off the sofa to kneel beside my brother's legs. Donna smiles at him. It's hard to read Terry's face. Despite the fact we mess around with each other, we're not gay. I don't even think of us as bi. We've never had an interest in other men. I probe his thoughts. He surprised as well but not irritated, not turned off.
I risk probing Mark. I don't get much but I can tell he has little interest in Terry's cock, or mine or any other man's. He's mostly interested in being a good companion for Julie. He wants to lessen the chance of jealousy, wants to show her he can match her stride for stride. I think he's going too far but it's not my call.
Having dropped to his knees, Mark looks as if he's lost his nerve. Donna pushes Terry's cock up against his belly and leans past him to kiss Mark. Even with Donna he seems tentative. Julie lies down on the couch, her face opposite her love and my sister. She rubs the back of Mark's head, his shoulders, then brushes his cheek with the backs of her fingers.
