[M] [F] [mast] [incest] [cheat?] My sister is on Tinder (Part 3)

Fuck fuck fuck! After last night I am seriously in trouble Reddit. I don’t know what to do anymore! You must help me. There has to be a way out! Let me tell you what happened.

I was running errands all day and I came home just a bit before dinner. Rachel was on the couch watching TV, and she asked me if I’d watch a movie with her after eating. “Sure” I said absentmindedly. One can’t anticipate a trap at every corner, right?

So we had some dinner and then we sat back on the couch. She put on Unfaithful, this old movie about a married woman who meets a guy and just can’t stop fucking him, and her entire family life goes to shit, and the lover is murdered and all that. When I was younger, I thought this movie was the hottest thing to have ever happened. I have never quite able to articulate why. Not until last night at least. I think Rachel knew all along. I think she put the movie on for a purpose.

As she starts banging him, you could already see my erection throbbing under the blanket. There’s no way she did this by accident. She turned around, not missing a beat, and asked me what the bulge was. And then she smiled. Innocent. Naive. Like she genuinely would have no clue what was going on.

“It’s my cock. It’s hard”
“Oh really, why? ’cause they’re banging on the TV?” she asked
“Yeah, I think it’s hot”

She leaned in closer to me. I could feel her breath on my skin. “Do you? Is it the taboo? Is it that she should not be fucking him? But she just can’t quite get herself to stop? She has everything to lose, uh? But the power of her own lust. She needs to be fucked. Fuck she needs it so fucking bad, uh brother? Her entire body is snapping with the need. And you can just feel it? Even if it’s just colors on a screen. You can feel how primal it is. She probably craves his babies or something. ’cause that’s what would happen in nature. She’d find this man and just fucking be ready to die to have his babies”

She kept talking and talking. And the more she talked, the harder I got. When she got to the babies part, my whole body was a storm of hormones. I was so hard it almost hurt to even think about it. I could feel my sister’s scent against me. I could taste her breath. She was so close it would have been barely a motion of my head to kiss her. But I couldn’t.

All I could do was.. give her the show and tell she wanted. I let my hand slide under the blanket. It closed in on my hard cock. And it started stroking. Up and down. Up and down. Tight. Oh so fucking tight. I was not messing around. There was no preparation. There was nothing but a man that needed to cum. And needed to cum before he lost every ounce of control.

Knowing that she could get me to do this must have given Rachel so much power, self-esteem. A sense of control. For she continued to talk. She told me to fuck myself like I was fucking her, the woman in the movie. “Fuck that woman like she wants. Give her everything you’ve got. She is putting everything she has on the line for it. It’s what you like, isn’t it? That feeling of irresistible? Knowing it’s wrong. And yet being a slave to your urges. Fuck the rules. Fuck morality. Fuck everything. Just fuck. And then fuck some more. Does that turn you on? That sex is the most powerful desire of man? Is it your most powerful desire? Tell me, is it?”
“Yes, yes, it is” I whimpered as I continued stroking
“Good”, she said in a soft, approving voice. “Good. It is mine too. There is no boundary I would not break for a good fuck. None.” And as she said this, she nibbled behind my earlobe, and gently blew air at me.

She let her own hand slide under the blanket. Moved mine away. And started stroking my dick. My sister gave me a handjob. She stroked. Softly. Slowly. I was squeezing tight and fucking hard. She was taking her sweet time. My hips started rocking up and down, trying to get back the friction she wasn’t giving. She laughed. “Relax. Let me handle it”

I let the tension in my shoulders go. I closed my eyes. I focused on the sounds from the TV. I focused on the feeling of Rachel’s hand. I focused on her voice. She kept talking. Her hand so gentle. And then she would say the dirtiest things. “I am so wet right now, you know? I am so wet a man could slide right inside of me and it would feel just right, you know? I bet you would like that feeling. Of sliding right into my wet pussy. Of feeling its walls close in on you. Tighten against your cock. As you slide in and out. Tight. Wet. A perfect fit, it would be. But you would pull out, right? You would pull out, wouldn’t you? It would have to be that way. Where would you cum? On my tits?” she said, as she moved just a tiny bit more forward, enough that I could feel her chest press against me. I could feel it heave as she breathed, I could feel my sister’s tits against my body. “Or would you rather cum on my ass?” she continued. I felt my hips rock. I humped at that thought. She giggled. “Oh you like my ass, uh? Have you ever looked at it? Like, you know, not like a brother. Like a man. Have you?”

Had I? I didn’t even know anymore. Now it felt obvious that, yes, of course I had. But, you know, having your sister jerk you off changes your perspective on things. Maybe we had always been sexual with each other and it had just never become explicit. A month ago I would have said “of course not” and been horrified at the thought. But now? Who knows? Who could tell anymore? Right from wrong? True from false? So I told her that, yes, yes of course I had. Because what’s a white lie between a horny brother and his horny sister?

“Good” she said. She told me she had looked at my cock a few times. I don’t know if the story was true or not. But she said she did. And that she fucked herself to the recollection of it. That mine was the first cock she looked at. Lies, I imagine. But, the kind of lies a man likes to hear.

I was getting closer. And closer. And closer. “I’m going to cum” I told her. “Good” was her answer. And she kept talking. She brought me back to the movie. To how, in her own words, “everything is now shit. Why? Because this woman was a slave to her sexual desire. People judge for this. I don’t. And I know you don’t either. Cave to your urges. Give in to them. Cum for your sister. Cum in her hand. Let her feel your cock twitch as your cum spurts out. Let me make you cum.” She kissed my neck. She bit it. Her lips got ever so close to mine. Ever so close. I swear you would have needed a microscope to see the distance between my mouth and hers. “Cum for me” she whispered once more.

And as she said it, I felt it. I grunted. I felt my cock tighten. I felt my pelvis push, thrust. She felt it too. I know she did.
She let go of my cock, and she put her lips against mine. I felt my cock twitch aimlessly. I felt the pleasure. The pain. The frustration. I felt the cum jet out of me, desperate, feeling itself wasted in the air, on the blanket, I felt my own body rock convulsively, hoping to find a receptacle just in time for one last spurt. And I felt my sister making out with me as it all happened. She “ruined” my orgasm as she kissed me.

I asked her why. Why everything. And all she said was “I told you. There is no boundary I would not break for a good fuck. None.” and then she nonchalantly told me she was heading to bed. “But I’ll probably fuck myself silly first. Maybe you’ll hear it” she giggled. “Goodnight brother” she added, walking off in the dark room, towards her bedroom, leaving me on the couch, alone, horny, frustrated, scared, my own cum to clean up.

Reddit, I think at this point it’s clear that my sister wants to fuck me. What do I do? How do I stop this? Am I in too deep to get out? Help!

Source: reddit.com/r/eroticliterature/comments/e21fue/m_f_mast_incest_cheat_my_sister_is_on_tinder_part