...My comment is, your acquaintances obviously ain't doing it right.
I guess that's the whole point, Tant, there is no
right way to do this...and, for most people, they never find the way that works for everyone.
It's great that you and your lady have found a way that works for you both. Honestly, that's the ideal situation, and what every couple hopes for at the outset. Generally, it's a matter of testing the waters.
If the people involved are strictly focusing on the sexual act(s), ie. pussy + cock + hand + mouth + etc = engaged, that's one thing. But most people are more complex than that. They have these nasty little things that rear their ugly little heads...they're called
feelings, and they're not just related to their genitalia.
One time, my partner and I were cruising the swingers house, checking out the scenery. We decided to hit the hot tub, and discovered a lovely young lady sitting alone. We offered to join her and, as we enjoyed our drinks and conversation, she opened up that her partner was somewhere in the house, and she'd misplaced him. This was causing her quite a bit of concern, and she'd become embarrassed wandering the house, looking for him. We attempted to engage in some 3-some frivolity in the hot tub and, while she was interested, it was clear her thoughts were elsewhere. In short order, she decided to leave the hot tub and try to find her partner again. As she was towelling off, he showed up, saying "Oh honey, I've been looking for you everywhere", to which she barely replied and they left to discuss whatever.
Communication is essential to success in non-dyadic sexuality.
I don't intentionally lean towards horror stories vs. successful play-romps. I assert that there are way more horror stories out there, that's all!
But, just to even the score, here's a success story:
One time, I walked into the group room with my partner at the time, and we came upon 2 fellows drinking beer at a table. They were in towels, relaxed, and having a great old time. As people in these situations will often do, they decided to tell us their story. Both of them were happily married and their wives had discovered each other at this swingers venue. Both couples made every effort to come to the venue once or twice a month, so that the ladies could play with each other in private. The fellas pointed out their female partners, happily engaged with each other. And the fellas continued to enjoy their beers!
It takes all kinds, my dear. Non-dyadic play isn't for everyone. Most people have some curiosity but most couples just can't seem to navigate the murky waters...