This is a fantasised story about my current girlfriend who gets fucked at the gym by her instructor. Hope you enjoy the story.

I started working out a few months back, I felt I needed to get in shape. I never worked out but I have always maintained a slim, petite physique and I never gained enough weight to be called fat. But I guess I wanted to do something after work and I decided to join a gym where I didn't know a lot of people went because I wanted to focus on my workouts without distractions.

I started going to the gym quite late in the night because then there would be fewer people. It was a co-ed gym with both male and female trainers available to help out with the workouts. On one of the nights I went to the gym, there were just a handful of people working out but there were no female trainers available to help me out. I started doing my weight lifting and I noticed this male trainer kept looking at me from time to time. I don't know if he wanted to say something or help me with the workout but I felt a bit awkward so I asked him to come forward. I asked him who he was and he said his name was Zahin. I asked Zahin if I was doing my workouts wrong and asked if he had any advice. He came forward and helped me with my weights and advised me to increase the weights gradually.

However, he told me that I should warm up before doing any weightlifting as it would cramp and strain my muscles and asked me if I needed any assistance. Since there were no female trainers I asked him to help me out. As I got up and got in position for my warm up, he held my hips and touched my ass. As the positions of the warm up changed, he brushed against my tits a few times and I felt a bit weird. A casually told him that my boyfriend also comes to this gym from time to time so he should watch where he's touching me. Zahin told me that he didn't mean to touch me in any awkward places but he would be more careful as that's how the warm up is done.

As the night rolls on, there are less and less people, with just me and Zahin and a few other people on the other side of the gym. I now start doing my squats and Zahin moves quickly behind me and cups my ass with both his hands and he's moving up and down as I'm squatting. He then places one hand just below my tits and he's squatting along with me. I immediately look behind and ask him what's going on, to which he says that it's how it's done. The trainer was really close to my body and I could feel the sudden rise of something else behind me. I could feel that Zahin was getting hard in his gym shorts as he held me from the back and it was also making me feel funny in a good way but I again turn back at him and ask him what's going on. Seeing that I was furious, Zahin instantly apologises to me and tells me that it was completely unintentional. He tells me that I had done enough warm ups and I needed to cool down in the female locker room.

I got up and walked to the female locker room and I saw that Zahin was following me inside. I went to the fridge and got myself a bottle of water when I saw Zahin close the door of the room. He rushed towards me and pinned me to the wall and asked me not to make a sound. Even though I was working out, I was not as strong as Zahin but I did put up a fight. I asked him what was going on but without giving me a reply, he pulled down my gym pants and started fingering me through my panties. I was shocked and I was literally shaking but that didn't stop him from fingering me. I told him that I was going to call my boyfriend but that didn't slow him one bit as he then bent me over and started licking my ass over my panties. I was kicking and screaming and resisting his actions but he now pulled down my pants, turned me over and put his tongue inside my ass. Even though he was forcing me with all this, I actually started licking it and it got me wet. He kept licking my ass and fingering my pussy at the same time and then he made me take his pants off. I was greeted with a rock hard big dick and his cock brushed me against my face.

Zahin wasted no time, pushed me to the floor, pinned me down and forced his big cock inside my ass. I let out a loud scream as I never got fucked in my ass. He thrust his cock and kept pushing it and it got inside my ass. I kept screaming out of pain but at one point I started liking it. He then gradually build up his pace and he was now fucking me really, really hard. He held my tits and he was squeezing them really hard, lowering down from to time to lick them with his tongue. He then took his cock out and then he went down on me to lick my pussy. He then spit on my pussy and made it really wet and slippery while he played with my tits. He kept doing the same on my ass as well and fingered both my holes at the same time. He held my by my neck and pulled me up and he used his cock to slap my face with it. I was really turned on by it so I held his cock and started sucking him quite hard.

While I was sucking him, he told me that he wanted to fuck me like this ever since he saw me at the gym. I told him that I never expected this to happen but he had given me multiple orgasms when he fucked me in the ass. Zahin was now ready to fuck my pussy but I told him that he can't fuck me if he didn't have a condom with him. Hearing this, he came towards me, held both my hands and pinned me against the wall. He then turned me over, spread my legs and just shoved his cock inside my pussy without a condom. He pushed my face across the wall and he kept thrusting me telling me that I needed to get fucked without a condom. I kept shouting that he should stop fucking me right now and I didn't want him cumming inside me. Zahin changed places again and he moved me to the bed where he bent me and fucked me from behind doggy style. He kept playing with my tits, squeezing them hard and slapping them with his palms. He then quickly took his cock out and shoved it again in my ass and he kept thumping me harder and harder. As soon as he switched to fucking me in my ass, I kept having multiple orgasms and I could feel Zahin was close as well.

Zahin now fucked me harder and faster and I felt he was about to cum. Just when I had one of my biggest orgasms of the night, I knew Zahin would cum and screamed at him to cum on my face. Instead of doing that, Zahin moaned really loud and came inside my ass. He came so hard that he still had some left and he shot the remaining of his cum all over my face. I screamed at him and hit Zahin for cumming inside my ass but he held my hands again, shoved his cock inside my mouth and ordered to clean his dick clean. He made me suck him and lick his cum from his dick. To end things finally for the night, he turned me over again and bend me down and put his cock inside my ass doggy style and fucked me hard to my last orgasm.