Oh god poly disaster. Remember, other people are not your relationship toys. Also, if you believe in hierarchical relationships, you are probably doing it wrong.
I’ve been married to my husband for five years, and in a relationship with him for fifteen years. About four years ago, we became poly with a friend. At the time, she was our roommate [….] we became quite close, and discovered that we were both attracted to her. When we found that the attraction was mutual, we formed a closed poly triad with her. In the last year, she has twice demanded to have absolute relationship equality to my marriage with my husband, despite our 15 years of history together. She has also stated that she wishes to have children with my husband – a condition I cannot accept under any circumstances.
Source: #740: Roles, evolution, and the risks and rewards of big honesty. | Captain Awkward