My Sweet Girlfriend

I rolled off of Cass, panting profusely. Both Cass and I were covered in sweat, both chuckling at the wild experience. Eventually, she handed me her phone. I could of course watch her last photo, but I was dying to see that ass picture too, so I scrolled up.

Yep. It was just something about seeing her toned ass hugged by my gray and white checkered flannel shirt. I had seen it a million times in real life, but seeing it in a picture was still so hot. And the soap made it really look like someone had busted on Cass' ass. It truly was a sexy photo. It started to make things grow for me again, looking at it. Especially knowing that Neil had already seen it, before me even, and probably jacked off to it. Neil had probably been cumming for my wife before I even did.

I was almost trembling as I scrolled down to her last picture. I tapped the message.

Cass was laying on her back, showing almost all of her perky chest. Only her nipples were just out of frame. And those puckered lips. Corny, yes, but yet so inviting. And the caption.

'Is that really your dick outline?'

I felt myself swell to full mast again. Fuck, who was this Cass, and what had she done to my cute little girlfriend? I of course knew she was still here, but she really committed herself to this fantasy, riding it right beside me.

Her phone dinged right here in my hand. Neil had replied. Cass looked over my shoulder. Another picture was sent. We exchanged a look. I tapped the attachment.

It was another photo of Neil in his white tank top. Only this time his gray boxers slid down his thick thighs. Out of his boxers hung the biggest, most bulbous cock I'd ever seen. By Cass' reaction, hers too. She was slightly biting her lip while looking at the thickness of it.

It was almost bigger now, out on display. Thick and girthy, way more than mine. Longer too. Holy fuck, janitor Neil was hung! And he was only sporting a semi by the looks of it. And creatively, Neil had captioned it 'All yours' again.

"Should I say something?" Cass asked. Instead, Neil replied once again. Text only this time.

"Those hot brown lips look like they need a huge cock between 'em."

"You'd love that wouldn't you," Cass teased, looking at me. I rolled to find a new condom and quickly slid it on.

"I've barely kissed yours, but just thinking about my sweet lips getting fucked by that brutal monster turns you on, doesn't it? Aaaah—" Cass said, ending in a moan as I entered her again.

"You'd love, uh, for me to tease him, huh? And after a bit of, oh shit... fuck..." Cass was unable to speak properly as I fucked into her.

Neither of us was able to say anything more as we once again fucked wildly. It was much faster and rawer than before. Soon we both laid knocked out, enjoying our newly envigorated sex life.

*

Thursday Cassandra worked at the pantry, to make up for the weekend. She was there from noon until later that night, which meant I had to get myself to and from work and endure a painful lunch alone with Neil who had just last night texted my wife a picture of his huge cock, after receiving a sexy photo of her ass with a fake cumshot on it.

Neil was even humming happily as he came into my office that day. His happy tunes almost had an eerie feel to them. Like his happiness came from a place that was supposed to be mine. Though the humming was interrupted by his vacuuming of course. Neil even stopped to shoot a text real quick. I could only imagine who, though I didn't know for sure. Surely this bastard would get off on texting debauchery to my girl right in front of me. His earlier bluntness surely was an indicator.

A few moments after Neil left the office, I got a message from Cass.

"I've been texting with a certain janitor," Cass wrote. I quickly asked what they'd been texting.

"Wouldn't you like to know?" Cass teased, denying me their conversation. She really was getting the hang on how to tease me properly. Now I was sporting an erection I could do little about. I had to get back to work.

By the time I finally got home, I was so worked up about the content of their conversation. The anticipation of getting to know what they had talked about was almost painful. I wondered if Neil had made any more comments about her body. I almost hoped he did.

When Cass finally came home, I immediately guided her to the sofa, dying to know. Cass giggled at my eagerness.

"You really want to know what we talked about?" Cass asked, biting her lip seductively, grinning coyly at me. After lingering for a moment, she handed me her phone so I could see for myself.

"It's pretty tame," Cass said.

I scrolled up to her last message I had read, where Neil had said her lips would look good on his cock. I could see it hadn't been the longest conversation, so perhaps Cass was right.

To my surprise, Cass was the one who had sent the first message, this very morning.

09.37 Cass: "Morning. Sorry about last night, I sent to the wrong guy. It was meant for my financée."

10.10 Neil: "Don't worry, your picture is safe with me."

10.11 Cass: "No way, please delete it!"

10.15 Neil: "Only if I can add to it!"

Cass then seemed to have ignored him, letting the conversation die. Not real insistent I must say. But then the next message was from Neil, him initiating it this time.

11.57 Neil: "Send me a pic of that sexy black ass"

This had to be the message he sent right in front of my face during lunch!

11.59 Cass: "No way. That's only for my man!"

12.03 Neil: "Didnt matter yesterday"

12.05 Cass: "That was a mistake."

12.06 Neil: "Make another mistake."

Then another half an hour where Cass didn't say anything. I wondered what she did at that time. If she was thinking it over. If she was getting horny from the conversation. Cass opened my trousers as I stood there thinking, and I sat myself down next to her. I didn't even notice I'd remained standing in front of her. Cass started to stroke my cock with her skillful hands as I read on

12.35 Cass sent an attachment. It was a photo. I hesitated for a bit. Scared of what I might find. Fuck. I opened it. Cass had sent Neil a photo of her in nothing but a thong, back and face turned away from the camera, captioned "Don't tell my boyfriend..."

Cass squeezed my cock hard as I throbbed hard in her hand. That caption... Neil had gotten another photo before I ever saw it. And it was captioned tailored to him! My sweet girlfriend, who I was going to marry, had sent the large, despicable man Neil a photo of her juicy ass while pretending to go behind my back. It turned me on so fucking much.