What is the difference?
Monogamish vs Open relationship
Monogamish and open relationships both describe a committed couple who agree to some outside involvement, so the line between them is blurry. Monogamish usually signals a relationship that is mostly monogamous with small, specific exceptions; an open relationship usually signals a broader, ongoing openness.
Monogamish
A relationship that is mostly monogamous but has agreed, limited exceptions, such as occasional outside encounters under specific conditions.
Full entryOpen relationship
A committed relationship in which the partners agree that one or both may have sexual or romantic involvement with other people.
Full entrySide by side
In short
Monogamish is monogamy with a few agreed exceptions; an open relationship is a couple with an ongoing, agreed openness. Couples pick the word that matches how they see themselves.
What they have in common
Both are built around one central couple, both depend on exceptions being known and agreed by both partners, and both benefit from regular check-ins and safer-sex agreements.
More comparisons
- PolyamoryvsOpen relationshipPolyamory is about loving more than one person; an open relationship is a couple opening their door to others. The two can overlap, and people choose the label that fits their arrangement.
- Affirmative consentvsEnthusiastic consentAffirmative consent is about getting a clear yes; enthusiastic consent goes a step further and cares whether that yes is truly wanted.
- Anxious attachmentvsAvoidant attachmentAnxious attachment leans in and needs reassurance; avoidant attachment leans out and needs space. Both people usually care deeply; they simply protect themselves in opposite ways.
- AsexualvsAromanticAsexual answers "do I feel sexual attraction?"; aromantic answers "do I feel romantic attraction?". A person can be one, both or neither.
Last reviewed 16 October 2026. Spotted a mistake?