"If you're not following the standard way of having relationships you have to make up new words," she said. "We have emotional states that cannot be described using normal language."
For example, "metamor" describes the relationship one has with one's partner's other partner. Then there is the concept of "new relationship energy" (NRE) - the "honeymoon period". This is especially important for polyamorists who have to overcome natural feelings of jealousy.