Intra-System Relationship

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An intra-system relationship, also called in-system relationships, in-house relationships, or internal relationships, is a relationship by two or more (but not necessarily all) headmates which takes place within a system.

Related Terms
Terms for system members who are attracted to others of their own system include SMLSM (system member loving system member) and Plurillean. Sysian or sysmasexual is a headmate who is exclusively attracted to others in their system.

Aepluric is a relationship within a system where all members are involved.

Intuspluric is a synonym.