Mr Ally, your boyfriend isn't the only one who jerked off under his desk. For several years I had a private office and nothing was as hot as getting a boner in my suit pants and stroking it until the precum started to leak through my boxer shorts and stain the leg of my pants. I would stroke just to that point and then re-arrange my cock so it was pointing straight up under the zipper. Then I'd walk down the hall to the washroom. I'd take a file folder with me just in case I needed to cover up, but usually I could go the whole way to the washroom showing my wood. Once I got into the washroom-which was a single, with a door that locked, I would stand in front of the sink and the mirror and rub that big boner bulging in my pants til I couldn't stand it any more. Then I'd unzip and pull my cock out of my boxers, and my balls, and jerk off into the sink. It was so hot seeing my cum fly out and watching my balls bang against my suit pants.
The only time I'd actually beat off at my desk was if I had to stay late and nobody else was around. I'd start off the same way, getting hard in my pants, but then I'd drop my trousers and sit in my desk chair with my hand under the desk and beat it till I blew.
One night I went into my boss's office (he was very hot, with a huge cock that would be visible down the side of his leg when he leaned back in his chair!) and jerked off sitting at his desk while I fantasized about catching him doing it there-or him walking in and catching me. But that never happened.
I did sort of get caught once...I was kind of casual that day-no jacket, just a tie and my gray flannels and I was just at the point of precumming and stood up so I could rearrange my bone. There I was with a six inch hardon in my grey slacks pointing off to the side when a guy walked into my office. I sat down fast, but I could tell by the look on his face that he knew I was playing with my cock at work. Whew. That was embarrassing. But it's sure given me many sweet jack off sessions since then.
Sadly, I got moved into another office with three other guys and my days of desk jacking were over. But still nothing gets me hotter than pix of guys with their dicks hanging out of a business suit or jerking off at a desk with their unzipped pants and boxers bunched right up under their balls.
Gotta unzip right now...that precum's starting to leak. Man, I wish you and your boyfriend were here watching me!