Closing the relationship

The process of returning from an opened structure to a more constrained one — typically monogamy or a tighter version of the current arrangement.

1 min read · Reviewed 2026-05-20

Closing the relationship is the term for the reverse of opening — a deliberate move from a non-monogamous structure back to monogamy, or from a more permissive structure to a tighter one. Like opening, closing is best treated as a process rather than as a single decision.

Couples close for many reasons. Sometimes one partner discovered that the lived practice of ENM didn't fit them, even though the abstract idea had been appealing. Sometimes life circumstances changed (a new child, a major illness, geographic relocation) and the couple wants to consolidate. Sometimes the original opening was rushed and the partners are stepping back to do the foundational work they should have done first. Sometimes one partner met someone outside the relationship who they want to centre, and the relationship needs to end rather than close — that is a different conversation.

What healthy closing tends to look like: open communication about what is being asked for and why; honest treatment of any outside partners affected (a closed structure should not be a euphemism for unilaterally ending an outside relationship); enough time to wind down outside connections with care; explicit conversation about whether the closure is permanent or a temporary pause.

What closing should not be: a unilateral ultimatum delivered to a partner whose other relationships are real and meaningful; a quick-fix attempt to repair a relationship in crisis that has other underlying problems (closing in those conditions typically just postpones the underlying conversation). The structure itself does not usually fix the underlying issue; it just changes the surface the issue plays out on.

Where this term fits in the wider picture

Ethical non-monogamy is a network of overlapping practices, identities, and structures — and Closing the relationship connects to several of them. The neighbouring terms below show how this one sits alongside the rest of the vocabulary practitioners actually use; the guide at the end is the longer-form treatment of the same territory.

Closely-related vocabulary

Opening the relationship
The process by which a previously-monogamous relationship transitions to a non-monogamous structure — typically a months-long conversation rather than a single decision.
Polyamory
The practice of, or willingness to engage in, multiple loving romantic relationships, with the knowledge and consent of everyone involved.
Open relationship
A committed primary relationship in which the partners have agreed that outside sexual, and sometimes romantic, connections are allowed within negotiated terms.

Questions practitioners actually ask about this

Continue reading

The longer treatment of this territory is in the guide What is ethical non-monogamy? A clear primer for adults thinking it through — An honest, plain-language introduction to ethical non-monogamy — what it is, what it isn't, the configurations it covers, and the questions it asks of you.

New to ethical non-monogamy? Start with the glossary for vocabulary, the structures index for the named relationship configurations practitioners actually use, and the guides for longer-form treatment of the common questions.