For the last couple of weeks Terry's been helping me get in better shape by taking me to the private gym he uses.
I'm really getting the hang of all the equipment now and do most stuff on my own, leaving Terry free to work on his own routine.
That means I can watch him as he exercises, his muscles flexing as he works out and the sheen of sweat on his body.
Most nights we've had the place to ourselves, so the session usually ends with Terry fucking me, the only person around being Ed, who comes in to watch and have a wank.
I did wonder how Ed always seemed to know the right moment to come in, but when I asked, Terry pointed out the security camera in the corner, high up near the ceiling.
Although we've bumped into Ray and Daniel a couple of times, he's never offered to share me again and as he said to me later
"Those two are far too keen and they'll always want more, so it might have been a mistake letting them join us that time. You're mine Mark."
Belonging to Terry was okay with me, because he made me feel good and I loved having him inside me.
Tonight we had company. Calum was an attractive man in his fifties, lean with salt and pepper hair, beard and chest hair, who quietly went about his routine and didn't bother anyone.
He'd been in a couple of times when we were there, but always finished up before us, so we could do what we wanted.
Tonight he was taking much longer and was still there when we'd had enough and headed for the showers.
I was disappointed, because I really wanted Terry's cock inside me, so as we shared a shower head as usual, I rubbed my arse back against Terry.
"I want you, Terry."
He was hard and I knew he wouldn't be able to resist, so put my hand back and lined his cock up with my hole.
"Fuck me Daddy."
Terry groaned and with one thrust he was inside me, filling me with his thick shaft and holding on to me, as he began to slide in and out of my needy hole.
We were so busy that we didn't hear Calum when he came in.
"Don't mind me boys, I'll just have my shower and go."
I did notice however, that he picked a showerhead close enough to us so he had a good view and as he soaped himself, I watched his cock grow to a hard seven inches.
Terry had spotted it too and held out his hand beckoning him closer.
After giving Calum's cock a few strokes, he swiveled me round, holding me tightly round the waist, so that my face was inches from Calum's knob. I opened my mouth and he slid in.
A big sigh escaped from Calum's lips as he slowly worked his hard rod in and out of my mouth, one hand on the back of my head.
Looking up, I could see that he was watching Terry fuck my arse and it was really turning him on, making his cock throb in my mouth.
Terry continued his assault on my hole, his thick cock filling me, his thrusts nudging me forwards on to Calum's cock.
He pulled nearly all the way out giving Calum a view of his swollen shaft, before plunging back in again. He did it a few more times and I could see Calum was getting more and more turned on by Terry's cock plowing my arse.
He suddenly groaned and his cock seemed to grow harder, then he released a mighty gush of cum that flooded my mouth, so much of it that I couldn't swallow it all and it dribbled all down my chin and all over the tiles.
Calum wiped my chin with his hand, then gave me his fingers to lick clean.
Terry was really slamming into my arse and I knew that any minute now I'd be getting his seed inside me.
One final thrust of his hips and he let go, yelling out as his thick hot man juice filled my back passage, always the best bit for me getting Terry's cum inside me.
Calum had been finishing his shower, but still watching Terry fuck me. As he turned to go, he patted me on the shoulder and nodded to Terry.
"Thanks guys, I really needed that, so thanks for letting me join in."
After he left, Terry and I cleaned up, soaping each other and rinsing off.
Terry hugged me tight.
"Great fuck Mark and I think Calum enjoyed himself."
"Yeah he seemed happy when he left."
We both agreed that Calum was an okay guy to invite to play with us again, if the opportunity arose.
The following Friday, while we were finishing our break at work, Terry said that he'd a favour to ask me.
"It's old Ed's birthday today and I wondered how you felt about letting him fuck you. A bit of a present like."
I liked Ed, he was a friendly old guy and in good shape for his age, so I didn't have a problem agreeing, plus I'd seen his long slim cock when he was wanking alongside us and wondered what it would feel like inside me.
When we got to the gym after work, we carried on with our usual routine, before we both stripped off and Terry positioned me on top of a pile of mats on my hands and knees.
He got behind me and used his tongue on my hole, getting me ready for his thick shaft to penetrate.
As he slid inside me, Ed appeared through the door with his usual perfect timing and leaned back against the wall, his cock already out and hard.
