I manage a large retail complex with a mixture of retail units and offices. I have a team that I manage including cleaners, maintenance workers and security officers. I have never been interested in any kind of romantic or sexual relationships at work. That is until last year when I hired a new security officer. He is from Nigeria, over 6 feet tall and has a muscular physique. I didn’t immediately start to think of anything but as time went on I found myself beginning to fantasise about him and what it would be like to be with him. I wear a suit for work and had never worn anything other than men’s underwear underneath but found myself starting to wear lingerie to work under the suit. One day there were just the two of us in the office and we got chatting. We talked about his wife and kids and other chit chat. The subject soon got on to sex and before I knew what I was saying I asked is it true that all black men are well hung? We both laughed and when we stopped he grabbed his crotch and said what do you think. I looked and saw a big bulge in his trousers and again before thinking at all blurted out, well I can’t tell through your trouser. We were no longer laughing but looking at each other amazed by what each of us was saying, well I know I was. Ok he said and reached for his belt buckle which he started to undo. I reached out and grabbed his hand and said no, you can’t do that in the office. where then he said looking straight at me. I went and got a set of keys for a vacant office and said let’s go there. We walked along the corridor and as we did I was shaking like a leaf, he on the other hand simply strutted along. I unlocked the door and we went inside, me locking the door behind us. Ok he said as he reached for his belt again. As he did I took off my suit waistcoat and tie and unbuttoned the first few top buttons on my shirt. By this time he had unbuckled his belt, unbuttoned his trousers and unzipped them. He reached for my hand and forced it down the front of his underwear. I felt his huge cock and took hold of it. I pulled on it a couple of times before pulling down his trousers and his pants, as I did his cock flopped out, it was at least ten inches long and had tremendous girth. I gasped and said wow as I groped at it once more. After a minute I dropped to my knees and opened my mouth, took his huge dick and started sucking on it. I could only get about half of it into my mouth before I started gagging, it was so nice though I kept sucking on through the gagging. After a few minutes of me trying in vein to take more of him into my mouth he pulled out and lifted me back to my feet. I thought that was where it was going to end but instead he reached out, unbuckled me, unbuttoned me and unzipped me. I was nervous again as I had lingerie on and wasn’t sure how he would react but before I could dwell on it he dropped my trousers to my ankles then stood back and gasped at what he saw. I was wearing black fishnet stockings held up by a lace suspender belt and black lacy knickers. Do you like i swiftly asked and he nodded in approval as he licked his lips. I took off my shoes and trousers and did a silly 360 letting him see all of me. He reached out and groped at my crotch and then reached around and grabbed my arse in his big hands. I looked up at him and he lent down and we kissed passionately. He then walked around until he was behind me, pulled down my panties then again grabbed at my ass. He pushed me down onto all fours on the floor then proceeded to lick around and push his tongue into my boipussy. It felt so good and even better as he reached underneath and started playing with my clitty. Soon he stopped and asked are you ready to take this? I looked back and he had his huge member in his hand and said well are you ready? I said yes but I’m not sure I can take that monster in me, by this time he was rock hard and it looked even bigger. He reached to his mouth and licked his hand then smeared his saliva around my butthole. He took another lick and rubbed his cock then positioned himself against my now eager pussy. He pushed gently and I felt my arsehole stretch painfully as he eased the head inside me. It hurt like hell but felt good at the same time. He paused for a minute with just the tip inside and asked me are you ok, I nodded yes and told him to take it slowly at first. He started to push deeper into me and again the pain came with the pleasure. He was now stroking in and out of my which felt amazing. The pain was subsiding and I looked back asking how much is inside me? He said about half and I let out a gasp before bravely saying in a teasing inviting voice well big boy give me more, I can take it I think I mumbled out. He pushed deeper and deeper inside me with every motion. Before I knew it he said that’s it baby, good girl, I’m balls deep inside you now. He didn’t push in or pull out but just held there and I could feel his balls on my undercarriage. I once again looked back at this beautiful man who’s cock was ten inches inside me and by now the pain had given way to pure pleasure and said to him what are you waiting for, come on, fuck me. He smiled and obliged pulling almost all the way out before pushing back inside until I felt his balls against me again. He kept thrusting in and out of me whilst I was in absolute euphoric rapture. Fuck me harder, fuck that pussy I demanded of him. He got even faster until he was pounding in and out of me with his huge hard piston. I moaned and gasped as he pile drove me to the floor but kept on fucking. Yes baby give it to me, give me that huge black cock I insisted as he rammed it in and out of me. This was by far the biggest cock I had ever taken inside me, bigger than any of my toys or anything that has ever been inside me before. He fucked me for about half an hour there on that floor before he let out a gasp and a groan and I knew he was cumming. I felt it as he sprayed my insides with his hot creamy seed. It felt amazing and once he was empty he slumped on top of me, I turned my head toward him and we shared another passionate kiss. We lay there with him still inside me for a few minutes before he withdrew and as he did my arsehole squelched. I pulled on my panties and we got dressed before one last kiss then went back to our office me with his cum still inside me. I won’t pretend my boipussy wasn’t sore and throbbing from the stretching it just had but it was worth it. I spent the rest of the day in my office trying to work but kept drifting away to the memory of our hot adventure. My hole was sore for days after and he wanted a repeat session but I had to tell him I couldn’t because it was so sore. Soon though I gave in and since then we have had many adventures which I will share later. All I have to add is that this isn’t a fantasy but is a true storey.