the issue appears to be mostly about your opinion on how many sexual partners he "should" have, and what it was "supposed to" be.
Partially, yes. That's my opinion. But, like I have said, my concerns are:
1) taking time away from our relationship
2) possibility of STIs
3) that I'm uncomfortable with sexual partners in one week exceeding 3
I can't really tell you (emotionally, aside from STIs) why I'm uncomfortable with so many sexual partners in one week. It *feels* - emphasis on *feels* - greedy. Looking at the logic of poly(-amory,-fuckery,etc.), it shouldn't be an issue. But it *feels* greedy, which is kind of what I'm trying to point out - it's a FEELING, maybe it can be overcome, maybe it can't!
Personally, I do not think it is reasonable to ask someone to place limits on how they want to live their life in order to kowtow to one's feelings of discomfort.
There my dear - not said condescendingly, but because you care enough to continue the conversation! - is the issue! I don't want to tell him what to do. But I do want him to understand that if I'm uncomfortable, I have to find a way to make myself comfortable.
It took him a few discussions to see that this is not about me wanting to control what he does. It is about me needing space or change for me to accommodate his desire to sleep with all of these women. This is difficult! Especially trying to get him to understand that I'm not wanting to tell him what to do. I respect him as an individual.
I mostly was struck by the language you used in your posts to describe the way in which he wishes to conducts his sex life. The words you chose indicate, to me, very strong judgments about how much fucking is going on and it comes across to me as a form of "slut shaming:"
Step back and please look at the context. "Feels like." It felt like greedy behavior. It felt like excessiveness. And in the context of our relationship, to have gone home one night while he - yes, FUCKED - a fling - when I was there and around and available... it feels like it devalues our relationship
Again. Feels like. I try my best to avoid making it out to be a factual statement because I'm describing how it feels. Feelings change. I am not going to deny what feelings come up because I've learned that if I let myself have those feelings and keep my reactions at a minimum until I've sorted out those feelings, that I am able to better process what's going on.
The whole conversation felt way too close to a display of disrespect.
Yes, it felt disrespectful. Perhaps it was unfair of me to write it that way, especially because you were all missing context: I was being told that MY FEELINGS, of this being uncomfortable for me, shouldn't matter to the discussion because his flings are not romances, because he's having safe sex, and because we did not have plans on those nights. So, in his mind, I shouldn't be feeling that way. It was very insulting to be told that I'm not allowed to feel a certain way. How would you like that? Would that feel respectful to you?
He has, previously, said that he would "not be excessive." This includes not cutting out my time, or his other partner's time. This includes being able to focus on our conversations and our time with each other. This includes not scheduling dates with every single fling every week. Yet, that's what happened. If he's making time for them weekly but he's also making time for me weekly... it is narrowing the gap between casual and a relationship.
Worries about STDs (though I assume you have safer sex practices in place!)?
That's the biggest worry, especially because the women he sleeps with have multiple partners themselves. Every single one of them.
Is it that you feel left out, or not important or special enough to him?
Yes, when I lose out on a night because of work, but all of his other nights are booked with casual flings, and I don't get re-booked. I'm not a space on a calendar, I'm a partner who is supposed to have priority. And having dinner with him before he goes - without telling me, like he is supposed to, according to our agreement - to fuck a fling? He admitted that he made the wrong call on that, and it had better not happen again.
When I asked "So what?" I meant, so what does it mean to you that he fucks more women than you think he should?
Again, it's the pace that bothers me more than anything else. I'm trusting him to be safe with them, but I have not seen papers (nor have I requested them to see for myself, but I request that he sees them). I'm trusting that he gets those documents and that he uses condoms.
When you sleep with that many people at that pace, the risk of transmission is really high. Knowing this makes me feel awfully dirty. That's not a lot of time to figure out if something's going on.
He has in the past not been honest to his other partner about the nature of my relationship with him, or our sexual practices, which when it was only the two of us wasn't a huge concern. Now that it's... five? of us? Different game.