Over time, it seemed like both of them were working together to get me aroused in those situations. First by picking movies that featured those raunchy scenes that worked before, then by Mia starting to make out with me intensely while Ava was right next to us. Finally, one night, they took it to the next level.
Mia had just gotten me worked up once again when she suddenly grinned at me. Then she looked Ava directly in the eyes, as she pushed her hand into my pants. Ava’s eyes grew big as she watched the rise and fall of my pants clearly showing how Mia was stroking me. Then she surprised me.
“Wanna see it?” Mia asked.
Ava just stared at her like a deer in the headlights for a few seconds. Then, in a barely noticeable movement, her head jerked in the tiniest of nods. Mia smiled, removed her hand from my cock, and used it to push the waistband of my pants down. Ava looked like she was holding her breath, transfixed on my pants slowly moving downwards and revealing my hard flesh. Then, when my rock hard pole sprang free and slapped onto my belly, Ava even jerked back a little. I was way too horny to realize how weird Ava’s behavior was, given how we were already intimately familiar with each other’s genitals.
I could hear Ava swallow, as Mia’s fingers wrapped themselves around my shaft again. Her glance moved back to Ava’s eyes as she resumed slowly stroking me. After another few seconds of this, she surprised me again.
“Go on. Touch him too.” Her tone was halfway between suggestion and command.
I just looked at her stunned. I was still worried about the possible implications of Mia actually seeing me fuck my sister, but the idea of having a girlfriend that was okay with it was too enticing to protest.
Ava’s eyes were now rapidly jumping between me, my cock, and Mia, before she tentatively extended her arm, placed her hand on my lower stomach, and then let it slowly glide downwards. The entire time, she was watching Mia like she was waiting for her to retract her permission. Mia never did. When my sister’s hand joined my girlfriend’s around my shaft, and they both jerked me off in unison while pressing their bodies to either side of mine, I thought my mind was about to break from sensory overload.
Mia leaned further into me and started kissing my neck, as her hand moved upwards my cock and wrapped itself around my crown. She was now using my precum as lubrication on my crown while Ava was steadily jerking my shaft. Ava soon followed suit by leaning into me to start kissing the other side of my neck, imitating Mia’s actions. And I fucking loved every second of it!
“Do you like that, Muffin? Do you enjoy your sister and your girlfriend working together to make your fat cock feel good?” Mia breathed directly into my ear, and I immediately moaned a barely intelligible confirmation.
“Keep going!” Mia commanded towards Ava, as she untangled herself from our bodies, removed her clothes, and, without missing a beat, swung her leg over my head to sit on my face. “Now eat that pussy, Muffin!”
And I did. While Ava jerked me off as commanded, Mia rode my face while loudly moaning. I admit, I soon forgot about Ava and simply worked on kissing, licking, and sucking Mia’s folds. While Mia’s ever increasing moans filled the room, the speed of Ava’s hand increased in equal measure. Within five minutes, Mia reached her orgasm and her juices freely leaked onto my face. Ava’s hand was now moving so fast that I wasn’t far behind Mia, but I had no way of letting them know, so I just let loose.
“D-DON’T STOOOOOP!” Mia moaned loudly, and both, Ava and I, took it to heart.
While I continued to eat Mia throughout her orgasm, Ava simply kept jerking me well past the time I had shot my last spurt of cum, and I felt myself reminded of the time Mia did that. It soon became so intense I couldn’t bear it anymore. Instead of throwing Mia off, however, I decided to grab her head from behind and push it down into my groin. There was no protest on her part, she simply opened her mouth and started sucking on my cum covered tip, causing Ava to finally slow down so as to not hit Mia in the face.
Another minute later, we all lay panting on top of each other, simply relaxing. I wondered how I should get Ava off, but then noticed her hand being stuck between her legs while she was panting just as much as Mia and I were. Apparently, she had managed to masturbate the both of us to a climax
There was no discussion about what happened. We collectively and silently decided to simply get cleaned up and go back to bed.
A few days later, Mia escalated the situation even further, which I should have expected when she lay down in between Ava and me wearing a thin négligée that barely reached halfway down her buttcheeks.
She quickly, and without even uttering a single word, had us positioned so that I was spooning her, while she herself was spooning Ava. As soon as the movie started, she started gyrating her ass into my groin, causing me to harden again and her nighty to move up over her butt.
Feeling my hard meat press into her behind, she removed the arm that was wrapped around Ava to reach back and massage my cock. In mere seconds, she had the blanket removed so she could see how my cock looked in her hand. Then she started sensually gyrating her bare ass in an inviting manner.
My hand reached forward to squeeze her ass, causing her to bend her upper leg and present me with a perfect view to her glistening sex. She had neglected to put on any panties and was obviously just as horny as I was. My eyes were glued to her folds, so much I once again completely forgot about Ava being barely a feet away from me. That didn’t change when Mia used her grip on my shaft to signal me to scoot closer.
As I did, she pointed my cock at her entrance and her intention was clear. I would have fucked her even if she weren’t now placing her hand on my hip and pulling me inside her.
With Ava seemingly asleep, I started out slowly, steadily pumping into my girlfriend from behind, as she turned her head to kiss me and reached back to wrap an arm around my head. Suddenly, I saw Ava stir and stopped all of my movements. Mia had a different idea, though, and started thrusting her hips against me instead. Ava was quickly awake!
As my sister turned around to see what all the shaking was about, Mia completely ignored her. She simply stopped being quiet about it, and moaned in lust as her hips continued moving.
“Are you fucking right now!?” Ava asked incredulously, and I was surprised at how much of an accusation I could hear in her voice.
“Turn around!” Mia barked through her moans, and, to my displeasure, Ava did. She simply turned her back to us.
To my greatest surprise, that pissed me off!
The way she had told Ava to simply turn away and let us do something like this right next to her, completely disregarding the hurt in Ava’s voice about not getting to participate, emotionally sent me back to the time I was excluded by the family. I was just about to tell Mia off, when she beat me to it.
“Not that way!” Mia barked again before Ava could place her head back on the pillow, and finally stopped fucking herself back into me.
When Ava looked confused at us, Mia grabbed her arm and pulled her into a sitting position, before placing her hand on Ava’s shoulder to push her back onto the mattress, but with her head now pointing to the foot of the bed, effectively positioning the two of them in a sixty-nine. Then Mia placed both of her hands on Ava’s head and pulled it between her legs.
Ava didn’t object. I saw her open her mouth and close her lips around Mia’s clit, while my dick was still buried in her canal. This was a whole new level of kinky for me, and I was extremely happy that Mia did not want to exclude my sister. I was almost overtaken by what I was seeing and hearing, but then Mia grabbed Ava’s hips and pulled them towards her own face as well!