Sex[M] with a married coworker[F] in the office and almost got caught

First time posting. Hope it’s not too long or boring. Let me know if you like it and I will post a few more.
So this happened about three years ago at my old job. My job role requires us to be staffed all year round while the rest of the office is off holidays and most people make it stretch by adding in extra vacation days.
Roll back to a couple of years before that for some back story. I usually got lunch in the cafeteria as the food was pretty good for an office building. Being single I would always check out all the women.
My favorite features are nice eyes, lips and booty, so naturally this mom next door caught my eye. I would see here here and there and one day worked up the nerve to chat her up. Nothing crazy just I see you always back in this section, and she told me she was a trainer. After that I would peek down to see if she was in the storeroom and not teaching and talk to her. I flirted a bit and found out she was married and I said too bad. We kept this up and chatted on the company messaging so we kept it clean. Had lunch in the office a couple of times and once or twice out but never made a move.
Now back to the good part of the story. So chatting as usual. I asked why she was in the office and just said she was saving her days and gets more work done when everyone in her group is out. My group had just moved to a different office space so we talked about that. I said oh well since you are here let’s chat on my break. She said OK. I said I would be going in about 15 minutes or so. I’m on a call and I see someone walk in and hear, he’s over there. I pop up and look as our cubicles are low and see her coming towards me.
My heart started to race a bit as I was not expecting her to come in as it’s not very private and everyone is in your business lol. I show her around and my coworkers are like who is that and I say it’s one of the trainers for the apps we support.
After the tour I go on a quick break with her and we chat. Since she was alone in her department and it was slow in the office I decided now was the time. I mentioned how nice her lips looked today and wish I could give her a kiss. She said thank you but you know I can’t. I go back to work and later on she messages me and asks if I can stop by her office later. I asked what time and she said she will be there late and I said I can after my shift is over. She said OK let me know when you’re coming.
So I go up and she said I have been thinking about what you said about that kiss all day. I said and what are you going to do about it. She said I want to see if you’re as good as you say. I close her office door and move over to the corner as there is a window to the hall and anyone can see in. I pull her to me and kiss her for several minutes and of course I’m getting hard. I asked her if she was wet and she said yes. I asked if I could feel and slipped my hand in. I couldn’t get a good angle because that big booty made her pants tight so I pulled them down and she panicked a little. I said don’t worry no one can see us and no one is here. I slipped my finger in her hot wet pussy and she moaned. I kissed her and muffled her moaning a bit.
I then loosened my pants and asked if she could give me a kiss down there. She said OK just a kiss. She gave it a kiss then started to get back up and I said hey that wasn’t a real kiss and she went back down and licked it then started to suck it. It was one of the best blowjobs I have had. Nice and wet and deepthroated. I pulled her up and said I have to fuck you. I turned her around and fucked her doggystyle pressed up against the wall. She moaned and then said you better pull out. So I did and turned her around, pushed her down in front of me and she swallowed every drop. I zipped up and we chatted a bit and I then a cleaning guy came walking past and saw we were in there so didnt come in. A minute sooner and he would have gotten a great show. We did this the next few days while the opportunity was there. I told her I was surprised because I didn’t expect such good head since she was reserved. She said she’s married not a nun. While her husband was having performance issues she felt bad and told me that we had to stop. We still flirted and she even invited me to come see her on a work trip but in the end she didn’t tell me what room she was in so I never went.