He recently has told me things wouldnt be continuing with his meta after he moves to his new place, and has expressed that he is having trouble seeing our other partner as a partner, (its complicated but i actually agree with that) and he intends to move in with me in the next 2 years. (All things i secretly hoped for (his meta was really toxic and our other partner is barley there for either of us because of their relationship with their mom who gets a say in quite litterally everything including things she should not have a say in) but i always hoped we would stay poly, i love him and id give up being poly for him but i want to find another solution. My bf has bad social anxiety so he cant really do concerts and festivals with me or some stuff that i love and dont feel safe doing by myself, he wants to get help and try but i dont think the problem will go away for a long time, he is also ace and im demisexual. He agreed to let me find a fwb kind of deal but i cant tell that hes not really ok with it, also im not sure im ok with treating sex that way as its somthing i never thought id do with someone unless i had a strong emotional connection to them. Im just not sure what to think of whats happening cause it feels like im breaking up a polycule by existing and i feel like to go mono im losing a part of me and idk how to talk to my partner about my concerns.