Current relationship structure: non-hierarchal Members: four women - two in a relationship with each other - and myself

I am a game streamer. Two of my partners (the two ladies that are a couple, A and B) were the ones that got me started on it and support my efforts in doing it.

K is a new partner that is geographically close to me. A and B live across the country from me. K also wants to watch me stream. I think, "great, maybe they'll get along with a shared hobby."

I was wrong. K was very flirtatious and it ended up blowing up last night. A and B believe that K is being aggressive in a show of dominance and are offended and hurt. I of course don't want any of my partners to hurt emotionally so I process what happened with A and B after the stream, gain understanding, and reassure that K is not going to "take me from them." As a possible solution, I advise K not to be flirtatious in the stream chat and to simply text me.

That went sideways. K doesn't think she was doing anything wrong and became very defensive. After discussing what happened she told me that, "no one understands me." I told her that I can't be foolish enough to understand all the time but I am wise enough to ask for clarification when I don't understand.

Was I not wise in allowing my partners to watch my stream together? Do you have any suggestions as to how best work this situation? I don't want any ultimatums handed to me by anyone over what I see can be worked out.

Thank you in advance.