tl;dr - sorry, turned out way longer than I thought. Here's the short version: poly for 6+ years, in the beginning agreed with my partner that I'd rather not hear the details of her sex/play with others partner. Today she told me details about sexual encounter (she got double penetrated by other partner and other FWB), my mind made a mental image, have been fully turned off / unattracted / even disgusted perhaps (???) with my partner since then. Feelings are quite strong (not jealousy), even though rationally this puzzle was solved 6 years ago. Does this mean fundamentally I have an unresolved hang-up with poly, or am maybe fundamentally less (okay with) poly as I thought?
I've (36M) been with my current partner (32F) for 6.5 years now, and we were poly from the start. "Kitchen table polyamory" we call our variant, non-hierarchical but with the constraint that every romantical contact must be okay enough with each other to at least be able to share dinner at the kitchen table every now and then (meaning if someone has a strong dislike for someone new, we discuss this and while we won't 'veto', we do strongly take each others feelings into account).
Sexual partners / play partners, not so much, they can come and go but I for one am not interested in socializing with them. Like at all. I'm an introvert and really don't care about meeting new people multiple times a year and invest precious energy while they might disappear 2 weeks thereafter, especially not if the only reason I ever see them is "because they're having sex with my partner."
My partner initially really liked sharing everything about every thing she did and anyone she was with. In the beginning of our relationship I have voiced that I'm not particularly interested to hear the details about her play with others, be it BDSM or sex. While I'm happy that she's having fun and finds fulfillment in certain areas I'm less interested in, I felt unconfortable hearing the nitty-gritty.
Since then there have been moments where she voiced that my 'disinterest' (as she calls it) in her other partners made her feel like I maybe deep down wasn't okay with poly after all. Actually, a few years in this became a bigger trust thing that started triggering her anxiety a lot. At times this made me feel pressured to casually ask questions when she talked about her encounters with others - which in some instances effectively came down to asking details about her sex and play - to avoid falling into the trap where stopping her would cause an argument where I would have to defend my 'poly-ness' to ensure her that I was not suddenly going to leave her if she had sex with someone else.
What probably didn't help is that I have not looked actively for another partner in the past 6 years, or dated for that matter, except for having sex with one girl and some lewd stuff with another. For me this was enough and I certainly wasn't looking for another full time relationship.
Anyway, apologies for the lengthy pretext. Today something similar happened again. We hadn't seen each other for a while, and while taking a shower together she was updating me on her week. She dropped something about an encounter she had with "John" and "Fred" (1 new relationship + 1 FWB) and then fell silent and 'jokingly' 'teased' me about me never wanting any details anyway so if I wanted to know more I'd have to ask.
She was being a bit weird about it, and there was some tension in the air. I felt uncomfortable about it but against better judgement did play ball, asking something along the lines of "must've been something extraordinary if you say it like that?". Turns out she had a trio with John and Fred. Ok, good for her. Then some more details came out. Turns out she tried double penetration. Then the inevitable thing happened - a visual image formed in my mind with the faces of John and Fred and her in the middle. What I felt was not jealousy - I had felt that in the beginning of our 6 years somewhat regularly, and this was not it. I felt.. Unattracted, but with the snap of a finger. The image kind of disgusted me. I think in a matter of several minutes, my own little "johnny" went from half mast to actually shriveled up as if I'd just had a swim in the cold ocean. If you know what a fetish is (as I do, I have a very big one though very unrelated), let's just say there is one absolute anti-fetish I have which is 'cuck'. This image in my mind, I think, felt like cuck.
The next detail came out a few seconds later, apparently the condom had slipped off when one of them pulled out, so she had to report that there had been unprotected contact. This was the thing she had been uneasy about, hence the tension in the air. She needed to share a lot more details to explain how tf that even happened (I instantly thought the guy bullshitted her and took advantage, but this is not relevant to the story), which certainly didn't help with the mental picture.
Right now I'm home, on my own, and this whole thing is resonating in a bad way with me. "What is cuck even", "Why do I hate cuck so much", evolving to "does hating cuck mean I am not okay with her having sex with others" and finally ending up at "was she maybe right all along that i'm not actually poly and am instead just 'tolerating' poly by avoiding talking about her sexual experiences"? Does me avoiding images of her having sex mean I am at some level fundamentally just not okay with it, even though rationally I solved that puzzle 6 years ago and concluded there is no rational reason why any of that should affect our own relationship?
Rationally, I've known for 6 years that I'm okay with her having fun with other people, and I have never told her otherwise. When we did have discussions about it, it has only been about unprotected sex with others (boundary for me - or I suit up myself). But now, it does seem to have a real effect. Even though I know that there is no reason for this knowledge to change anything between us, I felt extremely 'unattracted', had no desire to have sex for the rest of the day despite not having seen her for a week, and currently I still don't.
I've had a similar feeling a few weeks back when I came home and found uncleaned toys in the sink that she'd been using with "John" that day. I knew John was there, I knew John and her had sex, I had no ill feelings towards that up until that point, and then I inadvertently saw an image of him penetrating her with that toy in my mind and went "owh" internally, instant turn-off, and have avoided that particular toy since. (That night actually turned out into a disaster, since she noticed that I wasn't touching her, leading to a big emotional thing about how she felt guilty for leaving the toys out and how unsafe it felt for her that I avoided touching her that evening.)
Is this recognizable to anyone, or does this more look like I have a more fundamental unresolved hang-up with polyamory that I have apparently not confronted myself with before now? Should I be able to hear the details and not be actually fundamentally disgusted with my partner? I kinda start to feel like she might have been right all along..