Active Listening

My local mate is trying to get with my long-distance mate for the wrong reasons

I’m in a polyamorous relationship with three lovely people, two of whom are monogamous, and two of whom are long-distance relationships for me. My short-distance partner (who is monogamous) has said she is fine with my setup since the start, but I recently went to visit one of my long-distance partners (the polyamorous one) for a week, and honestly, it’s one of the best weeks I’ve had — we fit so well together, and everything was perfect. Now I’m back and my short-distance partner is having tantrums, breakdown after breakdown, and this partner is trying to get into a relationship with my polyamorous long-distance partner, and I am very uncomfortable with that, as I know she isn’t doing it out of love, but out of the fear she has of me doing things without her, and I am worried it will put a strain on the fantastic relationship my polyamorous long-distance partner and I have. I’ve tried talking to her about it, but it doesn’t seem to help, and usually just adds more stress on top of everything. I’m completely for them talking to each other, but the fact that she is going into this with the intention of getting into a relationship really puts me on edge. I’m completely at a loss for what to do. I’d love your input.