This was about 10 years ago now, so i would have been about 30. Still gets me turned on to think about. But i had a married fwb that i had met online and she was about 15 years older than me. We had had sex multiple times at this point and we liked to push the envelope. I work in an insurance office and she had recently become a customer with me also. She came over at the end of my shift, and we had sex on my desk and in my chair multiple times, and being that we were both married, was so taboo and thrilling. The hottest part about it was that a few months later, i reviewed her and her husbands policies with her husband at the same desk and he had no idea i had fucked his wife there just a few months earlier.