Ava had, again, completely forgotten about the TV. The tent in my sweatpants was apparently a lot more interesting than the show we were watching before. She didn’t do anything too telling, but one of her hands that was lying on my lower stomach was now slowly wandering downwards in the most minute increments before she caught herself.
From that day on, and to my dismay, Ava and Mia started spending a lot more time together.
Over the following few days, whenever Mia was in my apartment, they would withdraw into Ava’s and Claire’s room for “Girl’s Talk”. On occasion, when we were spending time together and I entered the room, they were caught up in a whispered conversation that abruptly stopped as soon as they noticed me. I have to admit, that kinda pissed me off, since I would feel myself being thrown back to my time in the family home as a fourteen year old.
The whole situation escalated another few days later, when we were all in bed again.
I was already dozing off when I suddenly felt Mia’s hand slip into my pants and wrap her fingers around my dick. In my already half sleeping mind, I simply enjoyed the feeling of her delicate fingers probing my cock, pressing her thumb on different parts of my shaft as if exploring it, before sliding further down to grab my balls and gently stroking them. She had me hard in no time.
When she pulled her hand out of my pants again and licked her palm, I finally woke up enough to remember that we weren’t alone. I looked to my side and could see that Ava was lying on her side with her back to us, but that back was firmly pressed into my side. By the time I looked back at Mia to tell her to stop, her hand had already found its way back into my pants.
When I opened my mouth, she simply cupped it with her other hand to stop me from speaking, and smiled sweetly at me. Her intention was clear now. She was doing that on purpose. She wanted to play around with Ava next to us.
The weeks of no release, coupled with the naughtiness of the situation and Mia’s encouragement, won against my reluctance to play along. Mia had positioned her mouth close to my ear, so I could hear and feel her hot lustful breath, only interrupted whenever she kissed the side of my neck. Simultaneously she started jerking my shaft in painfully slow and long strokes.
After about a minute of that, she used the hand cupping my mouth to turn my head away from Ava and towards herself, removed it from my mouth, and shut me up with a passionate kiss instead. Her tongue invaded my mouth and massaged my own, as her hand kept rubbing along my dick at a steady pace. When I opened my eyes, I could see that she was again attentively watching Ava for any reaction to what we were doing, as she slowly and carefully pushed down the waistband of my sweatpants and exposed my hard cock to the air.
Mia, now less careful with what she was doing, spat in her hand for extra lubrication before rubbing it all over the tip of my cock. I unsuccessfully suppressed a small jerk that traveled through my legs, and felt Ava now press her butt into my hip. That was it. She was awake and surely knew what we were doing literally behind her back.
To my surprise, though, instead of making herself known, I could see her thighs rubbing together while one of her hands seemed to make the journey towards her nether regions. Looking at Mia, I saw a mischievous grin appear on her face as her eyes sparkled.
Watching Ava’s reaction to what we were doing, Mia was now resuming my handjob with less inhibition. For the following few minutes, she didn’t care about making noises anymore, though she didn’t go so fast it would cause my body or the mattress to move too much and force Ava to acknowledge what was happening. Then she placed her mouth close to my ear again and spoke in a whisper that, in the quiet room, was surely loud enough for Ava to hear as well.
“Come for me.” and she increased the speed of her jerking hand significantly. “Don’t you want to shoot all over my hand, Stud? Right next to your oblivious sister? Come for me, Tim. Come right next to her. Don’t hold back. I’ll catch it all. Just come!”
And with that, she leaned down, wrapped her lips around my tip, and jerked me off into her mouth. I came in seconds and felt my body tense up as I emptied myself into her waiting mouth. And, apparently, Ava came as well! While I shot rope after rope, my eyes jumped between the sight of Mia’s lips around my cock, and the sight of my sister rubbing herself right next to me. Suddenly, Ava’s body slightly trembled and her legs stretched out. Mia continued sucking on my tip and slowly stroking my cock until Ava’s body relaxed. Only then did Mia wordlessly pull my pants up and snuggle back against my side.
Within no time, I could hear the both of them breath their slow and deep breaths, telling me they were asleep. I, on the other hand, was wide awake and horrified.
