What is a quad in polyamory?

A quad is a polycule made up of four people, typically two couples who are also romantically or sexually connected across the couples. So Alex and Sam are partners, Jordan and Riley are partners, and there are also connections between Alex and Jordan, Alex and Riley, Sam and Jordan, and Sam and Riley, or some combination of these.

Quads most commonly form when two existing couples meet and develop attractions across the couples, though they can also form in other ways. Not all quads involve every possible combination of connections, some quads have two couples with a couple of cross-connections rather than full interconnection between all four people.

Is a quad the same as two couples dating each other?

That's the most common form, yes. Sometimes this is also called a "swinger couple" arrangement when it's primarily sexual rather than romantic, though quads in a polyamorous context typically involve emotional connection alongside the physical.

What's the difference between a quad and a triad?

A triad has three people, all connected to each other. A quad has four. Quads tend to be more complex to navigate because there are more potential relationship combinations, up to six distinct pairings, and more opportunities for imbalances to develop if some connections are stronger than others.

What are the challenges of being in a quad?

The most common one is that quads are inherently unstable if the connections aren't all equally strong. If one relationship within the quad becomes strained or ends, it affects everyone. There's also the practical complexity of four people's schedules, needs, and feelings needing to be coordinated, and the risk that the original couples prioritise their primary bond in ways that leave the cross-connections feeling secondary.