I get this question a lot ... and yes, it's probably exactly what you think it is.
Monogamy = relationship between 2 people
non-monogamy = relationship with many people
ethical non-monogamy = relationships with many people and EVERYONE knows & agrees upon those relationships
Majority of us have been in monogamous relationships where the other person wasn't monogamous - ie, they were seeing or having sex with someone else without our knowledge (most of us call that cheating).
In an ethically non-monogamous relationship: ALL individuals involved know about each other and agree to see each other.
Now, remember: Relationships are a constant negotiation. There should be ongoing discussions to make sure everyone's needs are being met and desires are being fulfilled and relationship agreements reviewed and adjusted if necessary.
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