Mark could pretty much do everything for himself as the casts allowed him to. The one thing he couldn't do was shower himself. One the second day my mom was away, Mark wanted to take a shower, but knew he couldn't wash himself. I knew he wanted to ask me, but I also knew, he knew I'd had sex with guys, as well as girls. Making the choice for him, I offered to wash him.
What I wasn't expecting was for Mark to become erect as I washed his asshole. I'd kept my swim shorts on, but even those showed I'd too gotten an erection looking at his. So with a beaming smile on both our faces, Mark asked me if I could do something about his predicament. Taking my shorts off and showing him I had a similar need, Mark said "Why don't we sort each other out then". I didn't know he'd had any form of gay sex in the past, not until he told me later, he'd played around with a guy in college.
With the water flowing over me I sank to my knees and took hold of Marks long, but relatively slim cock. Only when I put his cock into my mouth did it begin to thicken. I'd sucked quite a few cocks before Marks, but not once had I had one which already looked fully erect, become far thicker. With his hands being covered by the shower protectors, he held onto my head and began to make all sorts of moaning sounds. The deeper I took his cock, the more Mark moaned and the thicker his cock seemed to get.
Then all of a sudden Mark stopped me sucking his cock and asked me if I was a top or a bottom. In every sexual situation I'd had with guys before Mark, I'd always been fully versatile, but I somehow knew he wasn't going to allow me to fuck him, so I told him "I mostly bottom". Once again he smiled down at me, kind of lifted me up and asked me to turn the shower off. Leading me into my moms and his bedroom, we lay on the bed together and began kissing.
Telling me he wanted to fuck me, I first asked him to wear a condom. Motioning towards his bedside draw I took a box of condoms out, unwrapped one and slowly slid it over his wonderfully large cock. Still both dripping wet, Mark lay on his back as I put his cock head to my asshole and then slowly as I could, I slid all the way down onto Marks hard cock.
It felt weird to have my moms husbands cock in my butt, but it also felt amazingly good. It was obvious right from the start, I wasn't the first guy to have had his cock deep inside them. As Mark knew definitely how to fuck a guy. It was one of, if not he best fuck of my life up until that point. We simply fucked for over half an hour with Mark setting the pace and position he wanted me to be in.
Finally as my own cock was bursting to cum, he had me lay on my back, put my ankles by his head and then have him slide deep inside me. Meer seconds after his cock bottomed out up my rear hole, I came all over myself without touching my cock. It was a first for me and it felt just awsome. Not missing a stroke, I felt Mark thrust into me harder and then felt his cum fill the condom inside my bowels.
Pulling his cock out of me, he asked me to remove the condom. As soon as I had, he then said "Now suck my cock clean and make sure you get every drop of cum off of my dick". I did precisely what my moms husband wanted for the next five minutes or so. Licking and sucking on Marks long veiny shaft until it began to become flaccid.
Lay together he asked never to mention what we'd done to him mom, as she wouldn't understand. Plus he said she didn't know that in his past in college, he'd had sex with another guy for over a year.
That night I slept with Mark. We fucked once more as he spooned me from behind. I told him I wanted to feel his cock bare abck inside me, but he wouldn't. We've both been checked out from Marks insistance since, and when my moms been at work or sometimes just having a sleep, I've either sucked Mark off, or had him fuck me bare back.
Every now and then I still hear Mark and my mom fucking. And I smile in the knowledge, I know precisely just what her pussy and asshole are being fucked by. I also know that soon it will be my turn again to feel his cock spreading my asshole, giving me the best orgasms I've ever had.


