My Sister’s Boyfriend[mf]

My sister always had great or terrible luck with guys, depending on how you looked at it. They were always incredibly hot, incredibly jacked, and seemed like decent guys. Other girls would drool over them, and Candice was really good at ignoring it, showing off the candy on her arm with incredible grace.

The walls at home were thin though. Based on what I could hear through the walls, they would either finish too soon, couldn’t get it up, not be good enough to give her orgasms, and all sorts of other things. It always made me laugh, and when I finally got the courage to ask for it, she sighed.

“At least they’re hot,” she said.

It was right after I turned eighteen that she started dating a new guy. He wasn’t jacked and muscle-y. Was the furthest thing from a dude bro. He was attractive, but in a nerdy, slightly chubby way. Honestly, he was more my type, but he was funny, and that seemed to cut through Candice’s normal type bias.

My sister was a solid ten. She was short, with a nice plump ass and medium breasts that perked just right. She had long, wavy brown hair, and a smile that could stop traffic. Every other guy that had disappointed her in the bedroom still tried to get her in there time and time again. Joe was different. He wanted to hang out. He wanted to have fun and spend time with her.

Needless to say, this wasn’t the only way he differed from the other guys. The first night he stayed over, I could hear soft moans coming from the next room. I leaned my ear close to the wall, waiting for the inevitable fallout of the nerdy guy creaming himself too soon, but instead found my sister’s moans growing louder. Her breath caught and a small scream sounded, before she yelled, “FUCK” at the top of her lungs.

Joe chuckled, “So soon?”

I could hear the shaking in her voice, “No one’s ever…I mean…holy shit. That was just your mouth.”

Another chuckle, and the noises started going from there, not stopping for another twenty minutes when she finally demanded that he cum in her, after four more of her own orgasms.

That wasn’t the only time they went at it that night, and each time the headboard in her room would smack into our shared wall, waking me. I should have ignored it and went back to sleep, but by the third time, I was knuckle deep inside myself, coming along with my sister as Joe fucked her brains out.

She was all smiles the next morning, and I have to admit, so was I. Just by proxy of their passionate sex on the other side of the wall, I had cum a few time myself. This nerdy guy, now cooking us eggs and bacon on our stove, had managed to give both Candice and myself one hell of a night.

I didn’t tell her about what I did, instead feigning ignorance as I asked her how it went. She told me how his tongue had brought her over the edge before he slid his thick cock into her, making her feel like her petite frame was going to split her in half. How his hands ran all over her body as he pounded into her, how he let her fuck him back without fear of losing his load like so many guys before.

Just hearing it from her point of view soaked me. Waiting for a natural break in conversation, I made my way to my room, turned up a youtube video to cover the sound, and finger fucked myself, imagining me in her place.

Joe kept coming back, and from what I can tell, he was an absolute specialist at teasing her body. I would catch glimpses of him dragging a hand across her thigh or back, or saying something quietly to her, and he body would tense and her expression would grow full of lust. I was jealous, more than I had been before.

I had constantly lived in her shadow. For everything she was, I wasn’t. I was taller, a little bit of chub, my face maintained too much from when I was a kid. I had a large ass, and medium tits, but they didn’t hang as perky as hers. I got her brown hair, but it hung straight. At best, I’d call myself plain.

There were guys into me. There’s always guys. As long as you have a wet pussy between your legs, at least one guy won’t give a shit about the rest of how you look. I ignored them though. I wasn’t into them, and I blew any off who tried to fuck with me.

So, at the ripe old age of eighteen, I was still a virgin. I had no experience in anything else regarding cocks either. I had seen plenty of videos, finger fucking myself raw most times, but I wouldn’t know what to do with one.

Candice knew all this of course. We were best friends. I told her everything. Well, almost. Eventually, after one of their marathon fuck fests, I told her that I had been listening, but not that my pussy was still aching for more.

“Sorry, you sleep so well, I forget to think to be quiet,” she said.

“That’s okay. I just wish I knew what I was getting into before I find a guy worth the time. I don’t want to end up like you did with all of your exes. I want to know good sex from bad sex.”

She looked at me, and a small smile crept on her face, “Alright, this is a little weird, but maybe Joe can show you some stuff.”

I was shocked. I had thought about him fucking me time and time again, but to hear my sister offer it was insane.

“No way. What the hell, Candice?”

She laughed, “Okay, okay. Forget I said anything. Just get out there and fuck some guys. You’ll figure it out eventually.”

I had forgotten about the conversation completely, until Joe came over earlier today. Candice and him were curled up on the couch, watching some horror movie. I sat on the other end of the room in the arm chair, getting into the movie. I looked over to them. Candice was asleep, and Joe was staring at me.

I got a shiver up my spine and goosebumps prickled my arm. He watched me with a gaze I had only seen in movies, one that screamed want and desire. I felt exposed and insecure, yet sexy. I knew what he was capable of, I knew what he had in my sister, and he was still watching me.

He finally made eye contact with me, and instead of freaking out like I had caught him, a smirk graced his lips. His eyes had a hunger to them, and I wanted to be his prey. Something came over me and I stood from the armchair, leaving the living room, before stopping at the archway that led into the hallway. I looked back at him over my shoulder, doing my best to make my face say ‘feel free to follow’.

I reached my room, sitting on my bed and waiting for anything to happen. For a moment nothing did. I was about to give up and fuck myself to the delusion I had in my brain when my cracked door swung open slowly.

Joe stood there, leaning against the frame, watching me. I smiled at him, unmanageable lust sweeping over me. “Shut the door,” I said softly.

He stepped in the room, closing the door behind him, and made his way over to me on the bed. Since I was sitting and he was still standing, his crotch was at eye level, clearly hard in his pants. I reached out, placing my palm lightly against it, rubbing it. It throbbed underneath my hand, and I nearly jumped in surprise.

I undid his belt, unbuttoned and unzipped him, and lowered his pants down. The beast that was his cock pushed against his boxers, and I pulled them down too, freeing it. It wasn’t as long as some I had seen in videos, but the thickness Candice had described was real. I took it gingerly in my right hand and slowly started stroking it.

He gave a soft sigh, and I looked up at him. “I haven’t ever gotten a chance to play with one of these. Can you walk me through it?”

“Sure,” he said, soft and sweet, “Whatever you want to do, I’m more than willing to help.”

“Teach me how to suck it,” I said.

I brought my face forward, lining it up with my mouth, and kissed it. I tried to copy what I had seen in some of the more intimate videos, licking around the head and under the shat. I was worried, but luckily Joe started taking control.

“Open your mouth, and suck on the head. Get used to the taste.” I took the whole of the head into my mouth, sucking gently and massaging my tongue underneath.

“Take it a little at a time. Don’t push yourself. Find your limit on your own terms,” he said.

I nodded, his cock bobbing with me in my mouth. I brought my lips back and forth across the head of his cock, working myself up. I started going further, letting this monster begin sliding down my tongue. I picked up speed as he began to breath heavier. He placed his hand on the back of my head to guide me, but didn’t force me to go any further or deeper.

I finally brought the head to the back of my throat, my jaw now screaming in pain, but I didn’t want to be done. I pulled him out slightly, taking in a gasp of air, before shoving my face back down on him, his cock hitting my throat. I held him there as he moaned a little louder. Once I began to run out of breath, I freed him, gasping loudly before sucking him back now.

The spit and precum drooled out of my mouth as I kept sucking him. His hand had gathered some of my hair and the pull made me feel dirty, my pussy dripping in my pants. He stood still, letting me take his cock on my own terms, before he let loose string after string of semen down my throat. I nearly choked on the first one, but caught myself, swallowing each load as I moaned from it. I slowly pulled him out of my throat, licking away a bead that sat on his head.

“Marie, that was really fucking good,” he said, slightly breathless.

I stood up, now on a mission, and dropped my own pants next to his. I laid back on the bed, the only thing between him and me being a thin lacy set of black panties.

“Let’s see if you can do the same for me, Joe,” I said.

He knelt, gripping the outside of my thighs before kissing up one of them. Little bursts of electricity followed every kiss, my pussy throbbing with desire. He slowly made his was toward my mound, dragging his bottom lip slowly from the bottom to the top of my slit. He reached the top, and let his tongue out, slowly massaging my clit through the fabric.

His hands had made their way down to my ass which he rubbed absentmindedly while sucking on my clit through my underwear. I moaned softly, shoving my wrist in my mouth as the pressure built inside of me, not wanting to let anyone in on what we were doing.

He finally grabbed the hem of my underwear, pulling them off and throwing them across my room. The cool air hit the wetness of my cunt, which was begging for him to come back. He brought his lips back to the my exposed self, and my body lurched almost instantly in pleasure.

He split open my lips with his tongue, shoving it deep inside of me, swirling and exploring every inch. His arms wrapped around my legs, pulling it closer to his mouth as he shoved his face forward. I reached down with my unbitten arm, digging my fingers into his hair and helping him get deeper in me.

My body filled, the pressure now at an all time high as he continued to plunge into me. He pulled his tongue back out, gliding across my clit, allowing me a moment of reprieve before reinserting it. I draped one calf across his shoulders, and his thumb found my asshole, gently massaging the outside of it as he ate his meal, finally taking me over the edge.

The pressure finally spilled over, my body now convulsing as stream after stream came out of me, spraying him in the face as he backed up. He watched it smiling, and as I finished, made his way back to it. The second he reconnected with my clit, my body went through a whole new wave of emotion, the after effect of such a strong orgasm.

He made me cum twice more before he pulled away completely, watching me squirm on my bed, biting my wrist through one last screaming orgasm. He stood, his cock standing at full attention once again, and smiled down at me.

“Fu…fuck th-thank you,” I managed to stammer out.

“Not a problem. I don’t think you realize just how sexy you are, Marie.”

“That’s what I’ve been trying to tell her,” Candice’s voice came from the doorway. She was leaning on my frame, smirking at us. I sat up quickly, started apologizing and she held up her hand.

“Since you wouldn’t let me set you guys up for you to learn, I went about it a little differently. You can’t imagine how hard it was to pretend to be asleep when I was so wet from what was about to happen.”

“Wait,” I said. “You set this up?”

She nodded, “I didn’t know you would be the one making the first move, inviting him in like that, but it was so hot that you did. You have a solid talent, you just need the confidence. How was it?”

I was still out of breath, still shaking, laying in a puddle of my own pleasure, with my sister’s boyfriend’s cock pointing at me. I finally looked at her, “It was fucking amazing.”

“And you haven’t even had all of it yet,” Candice said.

I looked at her, dumbfounded, “You mean?”

“Yup!” she said. “Next time, you’re going to take Joe’s cock into that little wet pussy of yours, sis. And this time, I’ll get to show you how it’s done.”

Source: reddit.com/r/Erotica/comments/yb7ce6/my_sisters_boyfriendmf