Small world is I am traveling next week and have set up a session with a Domme I have seen before.
She confirmed she will have another slave there. Her suggestion and she really gets into this. Nothing fancy. I enter the room and straight to my knees. He comes over and I do my job while the Mistress watches and talks to both of us. After he is finished he leaves and we start our session.
If you saw how much the Mistress really enjoys this some may understand.

Regardless of the activity, it is all about the chemistry with the people involved. My late husband liked things that I didn't and, visa versa...but, turning each other on...was the turn on.

Bingo.

Im straight, but for years this had been an incredibly hot and humiliating fantasy. and i have been close to doing this in session a few times but it has never worked out. Logistics have been tough it takes one other person and i guess they arent a lot of straight guys who want to be a part of this session. Who knows maybe one day.

I must not be the only one as this seems like an interest that many dommes offer compared to just a few years ago when this wasnt even on my radar.

I have talked to Dommes about this and it is difficult to coordinate two slaves time and donation. Sometimes timing works out. Plus there is discretion.
First one I experienced was a Domme who had a makeshift gloryhole. Nothing fancy but they guys couldn’t see each other. I was the giver. Just had to show up and deliver. Short sweet and quick and headed back to hotel. No donation on my part. Monetarily.
If it is not time consuming for the one party who is really not part of the session it is more doable. It is trying to mesh two slaves and there personalities and kinks that end up not working.