My girlfriend Casey is the love of my life. We've been together for four great years and have plans of being together forever. We have a great relationship. We have fun, we're both successful in our careers, we trust each other, we make each other better, we've always been faithful to each other and we have unbelievable sex. Casey and I are both 28 and in great shape. I, Nick, am 6' tall, 190 lbs, short brown hair, with an athletic physique and a nice thick 7" uncut cock. Casey is 5' tall, 110 lbs, short blonde hair with a gymnasts build, perky tits and a perfect ass.
Our sex life has always been great, ever since we started dating, but I definitely have way more experience than Casey. Casey had only had one partner before me and I get the feeling that he sucked at sex... Or just had a tiny cock. I on the other hand, have been more adventurous and have been with quite a few girls and even a couple guys. Casey has always raved about how perfect my cock is and how it hits her just right and makes her cum like nothing else. I've opened Casey's eyes to so many kinks, toys and sexual fantasies. Our sex life has never been boring... Until lately.
The two of us had hit a patch where we were just a bit stagnant. No one's fault, it just happened. Our dirty talk, toys and other fun in the bedroom just weren't exciting her the way they used to. Casey claimed she had no other fantasies or any other desires. I kept probing for opportunities to spice things up during foreplay but nothing worked.
One morning I got on Casey's laptop and was surprised to see what was on the screen. She had been reading a cuckquean story on Literotica, a site I had introduced to her. I checked our bedroom and after seeing she was still sound asleep I began to read. I was instantly hard. The story was about a wife that watched her husband fuck her best friend when she was in town on vacation. The way the story was written from the wife's perspective had to have excited Casey which started to give me an idea.
One night, after a couple bottles of wine, Casey and I were in bed and I was rubbing her clit, trying to get her in the mood. It wasn't really working. So I decided to run with what I had found on her laptop and get some new dirty talk started.
"Baby," I whispered in Casey's ear, "you love my cock, right? You love the way it stretches you and fills you. You love feeling it throb inside you. You love the sounds I make when I'm cumming, right?"
"You know I love your cock baby, I'm just kind of tired," Casey whispered back.
"That's ok. I'll just keep talking to you. Remember when we made that last sex tape? And I put the camera between your legs? For the close up of my cock sliding in and out of your tight, wet pussy? You LOVED watching that, right?"
"Yes, Nick, that was so sexy."
"Have you played with yourself to that video when you're home alone?"
"You know I have."
"So when you watch, and masturbate, do you imagine it's my hard cock sliding into another woman??"
"WHAT?!" Casey was stunned.
"You heard me, do you imagine your boyfriend's perfect cock pounding some other girl's pussy? Making her wet? Pleasuring her? Cumming in her?"
I could feel Casey's heart pounding, but even more, I could feel her labia suddenly slick with her juices. "I... I... I..."
"You do! I knew it! I found that cuckquean story on your laptop the other day and now I'm sure of it!"
Casey tried to pull away from me, but I pulled her into me with my other arm and continued to rub her clit. "Don't be embarrassed Casey, we're going to explore this little fantasy of yours!"
Casey shuddered, but I could tell she was excited.
"How long have you had this fantasy?" I asked.
"Maybe... Three months," Casey whispered.