Problem with partners first relationship
My partner and I have been discussing being non-monogamous after a few rough months and some issues of infidelity. I was excited when they decided to try poly with me, but there first choice for a secondary relationship was with another married person, and there is no consent from that persons spouse. After expressing my concerns about what this could do to this other family if my partners relationship goes south, my partner became very sad and upset about not getting my full approval and thinks that I need to be open to the possibility it could work. It makes me feel bad because I want my partner to have this positive feeling from this relationship but it feels wrong to lie to my neighbor about what's going on if they are not okay with this relationship. HELP!