Sex with my best friend’s sister part 6 [MF]

I’ve been having a casual sexual relationship with my best friend’s sister for a few months. Her name is Stephanie.

My friend still doesn’t know that I have been sleeping with his sister.

Steph and I are having a great time together. We’ve both given each other a sexual awakening. We’ve been trying every possible position in the karma sutra, gettin busy in public and our most recent faze; group sex.

After a couple of experiences, Stephanie had told her roomate, Marie about our adventures and Marie had asked if she could join in next time.

We all hooked up together at a Super Bowl party and since then, anytime I was over at their apartment we’d treat the whole place like it was our bedroom.

The girls constantly walk around naked, we’re taking sexy showers together, all sharing a bed, going down on each other in the living room when we watched tv at night. It’s been heaven!

There were a few rules we had. I was still Stephanie’s guy and she made it clear that we were inviting Marie into our bed.

I only ever went down on Stephanie and I had only had sex with Marie if Stephanie was present or intertwined in the act with us.

Leaving the more intimate moments with just Stephanie.

Marie and I had shared a moment last week when Stephanie had run to the bathroom and left me and Marie in bed together. We started making out, something we never did. It was always either me and Steph kissing or Marie and Step kissing.

But now that I was finally making out with Marie, something was happening. Kissing her was magical, we were both really getting into it as we began to let our hands wander, a new experience now that it was only us two.

Stephanie came back and the three of us got back to it, the moment with Marie had passed. I went back to fucking Steph from behind as she ate Marie out.

Last weekend, Stephanie went to visit her sister in Denver and both girls were quite sad that we would be apart.

On Friday night I dropped Steph off at the airport in her car and drove it back to her place.

I parked in the driveway and headed to the front door. I knocked before I tried the doorknob, the door was unlocked, I knocked again as I opened it and stuck my head in.

“Hello!”

No response.

“Marie? You here?”

I heard water running and the faint sound of Marie’s singing echo from the bathroom.

I walked in and headed to the kitchen and placed Steph’s keys in the bowl on the middle of the dining table.

“Marie! I’m back!” I called out again, now that I was next to the bathroom door.

“Okay!” She called out.

“Dropping off Steph’s keys! I’ll see you later” I called out.

The shower faucet turned with a squeak and the water stopped running as I heard three footsteps and the bathroom door whip open.

Marie stood naked in front of me. Her towel was wrapped around her shoulders as she dried off. Her cute B cup breasts bounced as she shimmied her towel down her back.

Her shaved pussy on display.

I had a boner instantly.

Her black, shoulder length hair was wet and sweeping across her face.

“You’re leaving?” She asked as she brushed her hair back with her hand, using her towel to casually dry the water out of her ears.

“Uhh, I was going to hang out with Chris and maybe crash at his place tonight” I said with a shaky voice.

Why was I nervous? I’d had sex with this girl before. Plus I had seen her naked dozens of times.

This felt different. Steph wasn’t here. Marie and I weren’t meant to hook up unless Steph was there.

“Oh okay.” She replied, seemingly saddened by the fact that I was leaving.

The two of us were in this new space together. A noticeable absence of Stephanie.

Steph brought a playfulness and joy to the occasion. We always laughed and played.

But Marie had a darker quality that I hadn’t seen before now. This wasn’t play time.

Naked, no shame, completely on display for me, lust in her eyes. An animalistic want arose in me.

I looked at my phone to check the time. I had 10% battery left. I placed it on the table.

“Unless you wanted me to stay.” I said breathlessly. Trying my hardest to let sexual magnetism rise.

She smiled as a flash of fire flicked across her eyes.

“Let’s see if you can handled me.” She said seductively as she walked past me, got to her bedroom door, turned to look at me and let her towel drop to the floor.

Her bubble butt jiggled as she walked into her bedroom and out of sight.

This was it.

I took off my shirt and pants and walked towards her room in just my briefs.

I walked into her room and my eyes went wide in delight as her bed came into view.

She was already in position. On her back, her legs apart and she propped herself up on her elbows and played with her clit. She bit her lip as she watched me walk towards her.

“What about Stephanie?” I asked. Knowing full well that his situation was against the rules.

“I won’t tell if you don’t” she replied devilishly.

I pulled my briefs off and let my thick, rock hard dick be free. She looked at it ravenously as she always did. But this time, it was all hers.

I was all hers.

I stepped towards her as I lowered my hips to align with hers.

She lifted her finger and gave me a finger wag “no” as she grabbed my hair and pulled my face down into her vagina.

This was my first time going down on Marie. It’s an intimate act that requires a lot of trust. We had passed that threshold.

I started eating her out as she steered my head with her hand. Moving me in different directions so my tongue could hit the exact right spot.

She started to cum quickly. I normally had to go down on Steph for a few minutes before she started to climax. With Marie, it had only been thirty seconds before she was moaning deeply.

Her body was shaking as waves of pleasure crashed over her. Her sexy abs flexed as she contorted in delight.

She let out a heavy breath before she pulled my face up, looked me in the eye and commanded –

“Fuck me.”

I thrust my hard cock inside her shaved, wet pussy as our faces were inches from each other. Our eyes were locked in passion as I thrust myself in and out of her as we shared the intimate moment.

She was different to Stephanie.

Steph would giggle, run her hands over me, tell me what she wanted me to do, bite my neck and kiss me deeply.

Marie just stared into my eyes, a serious look of silent, ferocious lust as she tightly held onto my arms with her legs wrapped around me.

This wasn’t fooling around. This was fucking.

She let me have my way with her three more times that night until I passed out from exhaustion.

I felt the pings of guilt flicker in my stomach as Stephanie danced across my mind as I fell to sleep.

I woke up the next morning confused as I felt a sensation below the belt. I opened my eyes and saw a lump under the bed sheet going up and down.

I lifted up the bedsheet to see Marie with my dick in her mouth as she gave me a good morning blowjob.

I grabbed her phone and took a photo as she posed and smiled with my dick in her hand.

She finished me off before my post-nut clarity made me start feeling guilty.

She could tell what I was thinking.

“We didn’t do anything wrong. We did what we always do, just Steph wasn’t here this time.” She rationalized reassuringly.

“I don’t know. She asked me not to get with you when she wasn’t apart of it.”

“But she was apart of it. You were thinking about her, missing her. I was thinking about her, missing her. She was with us in spirit.”

I tried to muster up a smile as the guilt started to set in deeper as the weekend went on.

I snapped back to reality from my sexual stupor by Sunday afternoon. I grabbed my phone off the table, plugged it in and took a shower.

As I dried off, my phone came to life and I got a notification.

It was a text from Stephanie.

Her plane was about to take off and she would be landing in 3 hours.

I looked at the time stamp on the message. She had sent it three hours ago.

Snap back to reality, opp, there goes gravity!

I jumped into action, threw my clothes on as I yelled to Marie through the bathroom door.

“I’m late picking up Steph. Be back soon!”

I didn’t have time to wait for her to respond. I grabbed Steph’s keys from the bowl and rushed to the car.

The brain haze cleared from my 48 sex romp as I drove to the airport with the windows down.

I pulled up to arrivals and my stomach dropped as I saw her. Guilt rising.

She smiled and waved and she ran up to the car.

Should I tell her what happened with Marie?

She kissed me deeply as she jumped in the car.

We talked about her trip and how her family was. She asked how my weekend was and I told her I hung out with Chris but stayed at her place most of the time.

We held hands as we drove back to her place, she leaned over and rested her head on my shoulder. She was being very affectionate.

My phone buzzed. I looked down and saw Marie had sent me a message. I put my phone on Do Not Disturb and placed it in the cup holder.

We arrived home and Marie was waiting in the driveway with a big smile of her face. She must have just showered as she was wearing her red silk robe and had her hair up in a towel.

Steph jumped out of the car and the two girls embraced as I grabbed Steph’s bags
from the back and checked my phone.

I opened Marie’s message-

‘I miss that dick!’

There it was, the picture I took of Marie giving me a blowjob in her bed.

I looked up and saw Marie looking at me as Stephanie told her about her trip as they walked arm in arm to the front door.

What was Marie doing? Was she horny? Or was she threatening me? I didn’t really have a chance to get our story straight or even say goodbye. Was she mad? Jealous? Oh god, what have I done?

I walked through the front door with Stephanie’s bags. All the lights were out but candles had been placed and lit around the apartment.

Stephanie gasped in awe as we walked into the romantic setting.

“You did this for me?” She asked as she looked in wonder around the room.

“We did.” Said Marie as she turned to face us, undid her silk robe and let it fall to the ground.

“Oooohhh.” Let out Stephanie as she was clearly just as horny as Marie.

The two girls walked up to each other and started kissing. Marie helped Stephanie remove her clothes as I shut the front door and put Stephanie’s bags down.

I slipped off my boots as I watched Stephanie strip down to her panties as made o it with Marie.

They’d missed each other. They’d missed us all being together.

I took of my shirt and pants as I followed them into the bedroom.

Part 7 coming soon.

Source: reddit.com/r/gonewildstories/comments/ue3zwn/sex_with_my_best_friends_sister_part_6_mf