Steph and I have been lovers for six years, having met through a work colleague more than 12 years ago. After we met, we became great friends, and used to meet regularly for dinner with mutual friends and colleagues. Then one evening, our friends did not turn up for dinner and we spent the evening as a couple, a nice dinner and some wine, we had an enjoyable evening. At the end of the evening Steph was well dined and somewhat merry after a few too many glasses of a very good red wine. I walked her back to her flat - only a couple of blocks from the restaurant, and she invited me in for a coffee. Of course I accepted, it would have been rude not to. I had a hotel booked for the night to save me the long train commute back home to my wife and kids. Steph is 12 years younger than me, 42 tall and slim, but with a generous bosom, which she makes the most of when dressing up, and long shapely legs. Dark hair (almost black) down to her shoulders, and a pretty face - a bit like Sigourney Weaver. A single lady with a good job in the city, she is self assured but not arrogant as some women of her standing could be. So, I made myself comfortable while she busied herself in the kitchen making coffee. We sat and chatted over coffee, when she suddenly put her hand on my knee and brought her face close to mine. "I have always fancied you Ian, how about some fun? You can stay the night if you like." I was shocked, while I admired this sexy woman, and I suppose lusted after her from time to time, I had never seriously thought I was in with a chance. Steph's hand moved up from my knee to my crotch, and my trouser friend responded with no instruction from me. We kissed, her tongue aggressively exploring as we did so, while her hand rummaged at my flies and released my cock, which she enveloped in her fingers. The next five minutes were frantic, at the end of which we were both naked apart from stockings (for Steph) and socks (for me). She led me to her bedroom, her hand grasping my now fully erect cock - and we collapsed into her king size bed. I cupped her breasts, and sucked her nipples in turn, her tits were every bit as wonderful as I had always imagined, with large nipples now standing hard for me to suck and bite. She moved away and her head dropped to my cock, and before I knew it, she had me halfway down her throat, such a glorious sensation. After a few minutes, I sensed I was going to cum, and stopped her, laid her on her back and climbed on top, placing my bursting cock at the entrance to her lovehole. She waited for me to pierce her, her eyes locked on mine. "Take me, fuck me!" She ordered. I did, and for the next minutes we fucked and bucked like rabbits. Steph came three or four times before I had to release my juice into her. After, we lay there, not talking, just cuddling each other, and I was soon asleep. I woke a couple of hours later, and Steph was sucking me back to life, she was insatiable. We made love again, and slept until morning. All this happened six years ago, since then we have been regular lovers, once or twice a month I would stay at hers and we would spend hours fucking and enjoying each other's bodies. Lately, I have begun to think of Steph and I being joined by another man, I have never had a threesome and I suppose these thoughts would usually be a husband's desire to see his wife being enjoyed by another cock. On the one hand I don't want to risk the lucky situation I am in, but on the other, my sexual desire wants to explore. More to come if you are interested...................