The following days after our encounter in my office we barely could keep our hands off each other, stealing kisses and intimate touches whenever we could. It was a busy office and still needed to show some air of professionalism, although Monica made that very difficult for me, she is gorgeous, sexy, and has a wicked sense of humor. We both have commitments outside of work so meeting up later was impossible we had to take our opportunities when they arose. Monica had arranged for a day's holiday, intending to travel to various new and used bookshops in London purchasing books that she would sell on at a decent profit as a sideline to her regular work . This gave me an idea, and the perfect time for the two of us to spend some serious sex time together. I knew the area Monica intended to go to Kentish Town, and in the past had often visited a certain Naturist spa there. Monica readily agreed she told me she had always fantasied about having sex in front of other people and maybe playing with another woman given the chance, Monica said she's played with a couple of different women in the past and would love to try this again. We met at Kentish Town tube station at 11:00am and walked the short distance to the spa. Out of our clothes and deeper into the spa we soon found ourselves in one of the dry sauna's, surprisingly it was very busy being early in the day, and soon we were joined in the cabin with 3 men all very keen to see Monica naked. She did more than that, I found out that Monica was also a complete exhibitionist and reveled in her nudity, making sure as she turned and sat down she exposed every inch of her beautiful body. I could see the men all had erections under their towels. she leaned against me. "This is fantastic" she said and moved her hand under my towel and over my cock it was very quickly as hard as the three obvious erections around us. pulling my towel aside she gently massaged my cock very soon with the heat of the sauna and her magic fingers small globules of pre cum appeared I knew if this was to continue i would be shooting my load much too soon. Reluctantly taking her hand away I instructed her to lay flat on the raised wooden seat, she laid back, her breast only slightly settling back under their weight, she had amazingly long large nipples which were also slowly increasing as the blood flowed into them I could tell she was aroused by the men watching her every move. I poured a little coconut oil into the palm of my hand and began to massage it into her body, working first along her shoulder line then gradually down until I was caressing her tits, her nipples by now were very swollen and large and so I tweaked them, giving them a firm pinch feeling the skin under my fingers react to my pressure, Monica moaned quietly, the men in the cabin smiled and nodded their obvious approval. I moved my hand lower until I reached her mound of Venus she was so smooth, her legs parted slightly in anticipation of my hand and fingers moving further south. not needing a second invitation I let my fingers explore her willing pussy she was very wet and the coconut oil made it so easy for my finger to slip inside her folds, once again she moaned and raised her hips slightly against my fingers. One of the guys opposite was clearly masturbating now although Monica was oblivious of this as my fingers worked on her clitoris, I was desperate by now to push my tongue deep inside her then flip her over and fuck her hard, but the heat of the Sauna was becoming very uncomfortable for us both, so reluctantly we removed ourselves from the heat and headed for the Jacuzzi......................in part 3