All persons in this story involved in sexual situations are 18 years of age or older.
*****
Part One
When I woke up, I was pleasantly surprised to feel my lovely wife's warm body still snuggled up to me with her hand on my sprouting cock. She was fast asleep but with the way we had concluded the evening last night it was no surprise she wasn't up bright and early for her morning run. We were both exhausted.
I slipped out from under her and quietly went downstairs to eat some breakfast. The house was quiet even though the sun had been up for at least an hour. I made a bowl of cereal and sat at the kitchen table, content to be alone with my thoughts for the time being.
What the hell was I going to do? That was the question that I didn't have an answer for as of yet.
The silence was soon interrupted by the sound of someone approaching. It was Katy, dressed in her running tights. She was beaming brightly when she saw me sitting there, by myself.
"Morning," she said, showing off her tight body as she walked toward me.
"I don't think Adrienne is going for a run today," I said.
Katy didn't seem too disappointed as she put her arm around my shoulder and kissed me. I instinctively reached for her stomach and snaked my fingers down into her tights. Just like old times, constantly pawing at each others' bodies every chance we got. I slid my hand down her mound and sunk a finger into her cunt, making her moan.
"Naughty," she whispered. "Are you gonna tell me about last night?"
I withdrew my hand and tasted my finger before answering. "It was pretty crazy."
She sat next to me at the table and waited eagerly for me to tell her the details. I teased her by eating nonchalantly like I wasn't excited to tell her.
"She wanted to pretend that we were brother and sister," I explained. "Since she knew that you and I messed around as kids, at least a little, she made me call her Katy."
"No fucking way," Katy said in shock. "And you did it?"
I nodded. "She was on fire when I did that. I swear, we never did that kind of thing before."
"How many times did you cum?" she asked.
"Twice. Not including the blowjob on the couch before dinner."
"Fuck..." Katy trailed off right after saying that indecent word, due to footsteps coming from the stairs.
We both turned to see our mother gently tiptoeing across the floor so as not to wake anyone. She saw the two of us in the kitchen and beamed brightly.
"Good morning sweeties," she said, coming to kiss us both on the head. "I'm so glad to see you two chumming it up again. You used to be so inseparable!"
Katy sheepishly smiled at me, and I just chuckled to myself. If she only knew...
"Hey Mom," I began, "Adrienne is still asleep, and I was wondering if you'd mind keeping an eye on the munchkin when she gets up so Katy and I can sneak off to get some Starbucks for everyone."
"Ooh, good idea!" Mom agreed. "Sure dear, go ahead."
I threw on some sneakers and hurried to the garage, but Katy was light years ahead of me. She was being a little too obvious, I thought, but then again it wouldn't arouse any suspicion. Her eagerness was flattering to me and I would be lying if I said that I wasn't getting wood already just thinking about being alone with her.
We made it out of the driveway before I felt Katy's hand reach for my crotch and grasp my stiffening cock. I just rolled my eyes, but my loins were stirring.
"You didn't finish telling me," Katy demanded as she stroked me through my shorts.
"Just remember I'm driving," I warned. "We've never done it like this before."
"First time for everything," she said, and started masturbating through her running tights simultaneously. "Besides, I'll probably cum just hearing the details. Then we can pull over somewhere and fuck."
Damn, it was just like we were teenagers again. We were reconnecting after three years with a magnetic pull that couldn't be denied. Our separation was having a rubber band effect, propelling us back into each others' arms with more force than we had used to pull ourselves apart. And she was right, we were going to fuck as soon as possible. Probably before getting Starbucks, since I didn't want our drinks to get cold.
Katy brought herself off in the car as I told her about my sex with Adrienne in full sordid detail. I could smell her sickeningly sweet pussy as she fingered it. That smell drove me wild. I told her about how Adrienne loved pretending to be my sister as I pounded her from behind with my thumb in her ass. I was extra rough, which for us only meant that I barely broke a sweat, but it was enough to invigorate us both into wonderful orgasms. Then we cuddled and I told her more of the harmless details of my incestuous play with Katy, sans the actual facts of how long it continued for. That got her riled up for some ass licking and anal sex. God I loved eating her ass and then fucking it. I came deep inside of her bowels and she held me there for as long as I could stay hard.
I finally pulled over into an alley a few blocks from our destination and found a spot that couldn't be seen from the street. Katy pounced me and tore her tights off as she clumsily found a spot on my lap to straddle. She fought with my shorts to free my erection but once she did it quickly disappeared into her tight cunt. She grunted at the self-imposed intrusion but rode me as hard as she could in the tight confines of the driver's seat.
Her mouth found mine and she hungrily pressed her tongue into mine. After some intense mating in this manner, she calmed down a bit and kissed at my neck. She started whispering into my ear, which I could not recall her ever doing before.
"I should feel jealous," she said softly, "but it actually excites me that you're fucking your wife and you're both thinking of me the whole time."
I moaned and she seemed to squeeze my cock extra hard at the same time. I almost lost it but I was too interested in hearing what else she might say, so I bit my lip and held out. Her slick pussy felt so heavenly as it caressed my shaft, I never wanted this to end.
"What if she knew?" Katy asked, continuing her whispering taunts. "What if someone else finally knew what we were? Imagine the release of it, our deep dark secret getting out like this, and not getting in trouble but only making it more exciting..."
She was forced to trail off as her climax approached. She groaned as it overtook her body and temporarily paralyzed her. I held her hips and thrust up into her hard, trying to fill her completely full of cock as the waves overwhelmed her. Her eyes were clenched shut and she was thoroughly enjoying this. I let her ride it out without interruption, except for my penis moving further and further into her depths.
She caught her breath and went back to kissing at my neck.