My mother and step father married when I was 12. At the age of 15 I'd been feeling sick at school, so one of the teacher assistants drove me home around midday. Like any other time I went into the house using the back door and walked through the kitchen, with the intention of going straight upstairs to my room.
I heard my step father saying something to someone in the front room. It was the response from a male voice that got my attention and made me look into the room. The voice I heard said something like, (I can't remember exactly) "I don't care if you aint got one, I still want you to fuck me".
I was instantly intrigued and as quietly as I could, I looked into the room. Knelt up leaning onto the couch was a young guy around twenty or so years old. He was naked and behind him about to put his huge boner into his arse was my step father. I watched as he put his cock to the guys arsehole and pushed forwards impaling him in one long thrust.
I don't remember how long I stood there and watched them fuck, but I do remember feeling so fucking horny, my sick feeling having dissapeared. After being there some time watching my step father ram his dick into his friend over and over again, I bottled out and slowly crept up the stairs to my room. My cock was straining to be released, so still listening to them fuck I took my dick out and began to masturbate.
I must have been moaning because just as I was about to shoot my load, my step father walked into my room. He didn't say a word, he just smiled, turned and walked out.
Nothing was said that evening when we all eat together, my mother none the wiser. She's still none the wiser as i've never said anything to her about what I saw and heard. Now as an older man I'm openly gay and I consider myself to be a versatile bottom. I've often seen my step father eyeing me up and I know inside, he'd love to get me naked and fuck the shit out of me.
I've never given him the oportunity to, out of love and respect to my mother. But recently I've started to see him differently, especially when he's lifting the weights in the garage. I keep imagining him tearing my clothes off and forcing me down before I take his thick cock down my throat, getting his cock good and hard then having him fuck me any way he wants.
In a fortnights time my step father and myself will be at home on our own for a week. My mother is going on a weeks holiday with lots of women from where she works. I know if I offer myself and my arsehole to my step father we'll end up having sex and I know I'll deffinately enjoy it. It's going to be real hard not to give in to my sexual urges.