It is completely on topic. My husband has experienced bitterness and anger, not directed at me, for exactly the same reasons. That the OP and others experience the same is relevant to the issue. I would expect this happens rather a lot when couples open their relationships.
Hinge of a V relationship with my husband (Thumper) and boyfriend (T-Rex). Also, mother of a 6 y/o girl by my husband.
My poly story begins here
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