The next few days at work were pretty uneventful. I had sat with Janet in the little switchboard cabin and she’d playfully tickled me. The only mention of the weekend was to ask if I’d enjoyed it. I think my erect cock sticking over the top of my trousers confirmed that I had. The other lady, Pat had asked if I’d had a good time too and seemed to be aware that I’d stayed overnight at Janet’s. She asked if they’d looked after me which I confirmed. She told me that Janet was keen to have me stay. Pat was a bit older that Janet. Probably early forties but slimmer. I knew little about her but we addressed her as Mrs so I assumed she was married. She was a senior secretary in the office and was the bosses secretary. I was a bit wary of her as she always seemed a bit stern and aloof with me. In those days long before computers, everything was typed or handwritten and all this had to be filed. We had a special filing room which was in the basement of the building. It also held the strong room as large amounts of cash were often held there. As a result, the room was like Fort Knox and anyone working in there always had to lock the door. I hated going down there because I hated filing. Invoice after invoice. Job sheet after job sheet. I was down there one afternoon alone when the doorbell rang. I opened it and Pat was there carrying some box files. I let her in and relocated the door as instructed which was the normal practice. I carried on working as she did for a while. She called to me and asked if I’d spoken to Janet at lunchtime in the switchboard. I had and confirmed it. She told me that I should be careful as one day somebody might catch us. I was embarrassed by her knowing but she said that Janet had been boasting of how she could tease me and how quickly she could make me cum. I was a bit frightened and thought that Pat was going to reprimand me but she surprised me by saying that I should learn to control myself. I thought she meant to refrain from spending time with Janet but she continued explaining that girls don’t want someone who cums quickly but would rather have longer with the man inside them. I said that I couldn’t help it and just got too excited. She explained that I need to slow down. She stated running her hands down my sides and onto my hips. She pulled me towards her and asked me to hug her. I did as I was told and her hands started massaging my bottom, pressing me towards her. After a few seconds, the inevitable happened and my cock spring into life. She was grinding herself against it and put my hand on her breast. She had typical office wear on - white blouse and I think navy blue skirt. I unbuttoned the top of the blouse and clumsily put my hand inside her bra. She was pulling away at my trousers and said something like let’s get this out. She held my cocktail and sensed how close I was to coming. She squeezed my cock hard and told me to control it. My excitement subsided enough to prevent me coming and she then stood back and hitched up her skirt. She was wearing stocking and suspenders as was quite normal in those days. She took hold of my cock again and pulled me back onto her. She then fumbled about with both hands and fed my cock into her pussy. She told me to just keep still and hold it there. I managed for about a minute then started pushing into her. Again when I started getting faster, she stopped me again. This happened three or four times but then she never stopped me and I exploded inside her. I think I’d almost cum that many times, it shot out like a bullet. There she said. You can control it. She tidied herself up and was back to being bossy again. She told me not to tell anyone about what had happened- especially not Janet. She said if I did, what had happened would never happen again.