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Reference · Structures
15 named ways of arranging romantic and sexual commitment, documented the same way as the rest of KINKSpec: plain clinical definitions, verifiable history, cited sources and the 0–100 popularity index — ranked among structures only. A structure is neither an interest nor an identity. It is how a relationship is arranged, and every prevalence figure here names the survey it comes from.
Broad labels that cover many structures rather than name one.
Exclusive arrangements, and the narrow exceptions some couples negotiate.
Multiple concurrent romantic relationships, and the shapes they take.
Sexual openness agreed within a couple, without a polyamorous frame.
Structures that reject a fixed ranking between kinds of relationship.
A relationship structure is the named shape of a commitment — how many partners it involves, whether it is exclusive, and how the people in it have agreed it works. It is not an interest and not an identity: monogamy and polyamory describe arrangements, not attractions.
KINKSpec catalogues 15 entries under relationship. Each is defined in clinical language and ranked 0–100 by how common it is.
Monogamy ranks highest in this group, scoring 83/100 on the KINKSpec popularity index.