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I'd been dating Mark for three months. He was a 25 year old god. His 6'2" frame was ripped with smooth muscles. He had short blond hair, light grey eyes and a really handsome face and strong jaw. He loved getting fucked and had taken many cocks. He had a special affinity for big cocks, always telling me about the time he took a 12" black cock five times in one night, not to mention his regular practice with his 14" dildo. Gifted himself, he was an amazingly versatile top with his gorgeous 8" cock.

Mark and I were very open about fantasy and also invited other men to play sexually with us together. However, I told Mark I wanted to start using him like a whore on his own. The idea turned him on, and he gave me permission to proceed. I created an account for him online and included some great nude pics of him. I had no shortage of men who replied, and I talked to them on his behalf. I had built up a clientele of five different guys who would come over while I was there, fuck him and leave on a regular basis. I'd go in after and fuck him again, loving the feel of his spent hole. A few times, I'd get two or three guys at once to fuck his eager ass and mouth. We were doing this type of thing pretty much every night of the week. However, knowing how Mark loved taking such big cock, I wanted to get him what he really wanted.

I finally found a very hot banker named Kyle who was always horny. A self-proclaimed jock and amateur bodybuilder, his profile stated he was 6'5" tall with sandy buzzed hair and a short trimmed beard. What put him to the front of the line, though, was his 12" cock. He sent me his pics, which confirmed the description and added to that one very sexy face with gorgeous blue eyes, and his giant tool. I confessed to him I was the boyfriend and that I wanted him to fuck my boyfriend, but that I wanted to be there to watch. I made sure Kyle knew that Mark had a special affinity for taking the well-endowed. Kyle was very into that, explaining he'd performed with an audience before. We coordinated that I would have him come to Mark's house where Mark would be waiting. They would start fucking, with Kyle having full permission to use Mark as his slut...however he wanted. Then I would walk in the house 20 minutes later and sneak down the hall and peek in the door and watch them fuck until I joined in. We set up the date and time for a few days later.

I simply told Mark he had a special client coming and he was to make him very happy and that I would be in the room and watch for awhile until I joined in.

The day arrived. I couldn't wait for the work day to get over to see Mark take this huge cock. However, I got an unexpected text from Kyle, "Left work an hour early...couldn't wait to give my new slut what he really wants. Doubt you'll get him back."

He followed it with a photo of Mark straining to get his mouth around Kyle's thick cock, cum oozing out the sides of his stretched mouth.

I was devastated. I ran to my car. It would take me 20 minutes to get home, meaning by then Mark and Kyle would have been fucking for close to two hours. This was not the plan. I drove as fast as I could.

I got to Mark's house and went to the front door. It was locked. I walked to the back of the house where I knew Mark kept an extra key. As I grabbed for the key, I could hear them moaning from outside. I stopped to listen to the deep muffled roars of what must be Kyle and then Mark's pleasured begging in return.

I ran back to the front of the house and got in, surrounded now by the clear shouts from the bedroom...the pounding of the headboard into the wall, the squeak of the mattress and their moans to one another.

"You like that big dick bitch?"
"Been craving it, Sir." Mark whines back.
"This is the only cock your gonna want isn't it?"
"Oh ya! Everyday...fuck me!"
"Ya bitch...I'm your new man. You can look forward to this beast fucking you nonstop everyday."

They kept up their banter as I tiptoed to the room and peeked into see Mark on all fours, clinging to the mattress and Kyle ramming him from behind. Mark looked exhausted but was begging for more.

Kyle pulled out, revealing the biggest cock I've ever seen, very similar to the 14" dildo Mark pleasured himself with. He ordered Mark to flip over and proceeded to push his knees to his chest and plow his gaping, used hole from that angle.

"How's that, baby?"
"Oh ya...fuck me."
"Fuck me what?"
"Fuck me MASTER!"

They were staring into each other's eyes, their connection was obvious. Mark looked lost in Kyle's spell. It was clear neither anticipated my presence.

"You ready for another load? Open wide."
Kyle pulled out again. He brought his huge beast to Mark's open, eager mouth and dumped a big, thick load of cum into it.

"That's it...take it all. That's four big loads for you, Cum Slut."

Then, he leaned over and the two made out, mixing the hot cum in their mouths.

"You sure like big cock baby." Kyle said as he laid his massive body on his back.
Mark crawled up and laid his head on Kyle's massive pecs. "I only crave your cock, Master."
"I don't think anything else can satisfy my slut after this."
"No Sir."

They looked into each other's eyes until Kyle drew Mark up to his mouth and they started making out again. The kiss grew more and more passionate until Mark climbed on top of Kyle. Kyle's giant cock had already grown stiff again.

"Damn, you just can't get enough of this beast."
"No Sir. Fuck me again" Mark agreed.

It wasn't more than ten minutes and Mark was right back on the cock riding it like a champion bull rider, each of their muscles rippling. Mark was bouncing, grinding and convulsing, his eyes rolling back into his head.

Kyle flipped Mark onto his back without slipping out. Mark looked like a puppet on a stick. Kyle rammed his cock in without mercy, pulled out, grabbed Mark's jaw to open his mouth and squirted another big load inside.

"I own you, Cum Slut." Kyle groaned. Mark nodded, cum leaking down his chin. I was stroking the bulge in my pants. I shifted my feet, which caused the floor to squeak.

"Is that you?" Kyle yelled.
I walked in.
"I thought you told him you were cancelling." Mark said in shock to Kyle.

Kyle answered my puzzled face. "I knew you were there the whole time. I wanted to make sure you saw for yourself that I own this slut now. You got that?"

I nodded, confused by sadness, anger and lust.

"I've giving him five loads already today. His belly is full of my seed, and he's gonna take a lot more tonight. Then, I'm going to keep fucking my slut all weekend long with my giant dick. I own him now. He's not yours. You don't touch him anymore, or I'll beat the shit out of you. You can stay and watch, but only if you serve us. You got that, faggot?"

I nodded again. I looked over at Mark, who was smiling and gazing into Kyle's eyes as he spoke.

"Now, get us something to drink boy."

I walked to the kitchen, knowing my new place, hearing them start another session of fucking.