Woman at work takes me to orgasm......

So the title gives it away, but I have to tell you all about my amazing afternoon....So I've been in my job about 6 months or so, and so there are lots of people that I still don't really know very well at my place. People who I see regularly, but that I don't actually know personally. There's a lady who works on my floor and for my company who started about 2 months ago. I don't know her name, and I don't know how old she is, but I think probably early 50's. She doesn't wear any jewellery on her hands so I'm assuming -- possibly quite incorrectly -- that she's not married. Anyway, I've seen her a few times around the place and we always smile at each other. We're both smokers and so I've seen her outside having a smoke at the same time as I do on occasions.....Today I went to call the lift and she came out after me.....She looked REALLY good today.....She was wearing a short dress that showed her off to perfection.....She looked amazing....She was in front of me in the lift going down, and I made the most of the opportunity to admire her from behind as we rode the lift down....I can't remember what I said, but I made some small talk for the 30 seconds down to the ground floor so we could go outside. We carried on chatting outside.....She looked so lovely.....I had one hand in my trouser pocket stroking my cock as I talked to her.....I was a little bit shocked when she looked down and caught me stroking my cock through my trouser pocket....There's no way I could say anything to make it seem innocent.....Luckily she looked back up at me and smiled.....She moved a little closer....Her hand went to my crotch.....She touched my hard cock through my suit and said "You like to touch yourself talking to me?". I could only say "Yes" as she unzipped my fly....Then she had my hard cock in her hand stroking it from the base to the tip, wanking me off. I looked into her eyes again and she smiled at me. We were at the corner of the building so shielded from the main road, but I let her stroke the length of my cock as we stood there. We can't be away from the office for TOO long, so after a couple of minutes she put my incredibly hard cock back into my underwear and did me up, and then we walked back in together. I don't know if the building security guy's noticed, but my trousers had a MASSIVE bulge at the front!! We took the lift back up to the 6th floor where we both work. On the way back up she unzipped me and slid her hand inside my trousers and started to wank me again. We got off at the 6th floor and neither of us wanted to stop. She whispered to me that she was going to the ladies toilet.....A few seconds later she reappeared, took me by the hand and led me into them. It was empty, so we chose the end cubicle, she undid my trousers, sat me down on the seat, pulled her skirt up around her waist, pulled her panties down, and lowered her self on to me. For the the next 15 seconds / minutes / hours (it was hard to tell!!!) we made love. I fucked her until she came. And then came again. Then I came.....Then SHE came again....When we finally left the toilet and went back to work my boss asked where I'd been. I said "Networking with other teams". I love networking :-) xxx