The definition
A V relationship is a three-person polyamorous configuration in which one person, called the hinge or pivot, has two separate partners who are not romantically or sexually involved with each other. Drawn as a diagram, the shape resembles the letter V: the hinge at the bottom point, with two arms extending upward to each partner.
The two people at the ends of the V are metamours, connected through their shared partner, but with no direct romantic relationship between them.
How a V differs from a triad
A V and a triad (also called a triangle) both involve three people, but the relational structure is fundamentally different.
In a triad, all three people are partnered with each other. A-B, B-C, and A-C are all active relationships. There is no hinge, everyone is connected to everyone else.
In a V, only the hinge (B) has relationships with both others. A and C are connected only through B. A is not partnered with C; C is not partnered with A.
This structural difference has significant practical implications. In a triad, metamour relationships are also romantic relationships; in a V, they're not. The emotional dynamics, the social obligations, and the potential for conflict are different in each.
What the V position involves for each person
For the hinge: Managing two separate relationships that don't have their own direct connection. The hinge is the connective tissue of the structure, the person who holds both relationships and navigates between them. This involves more scheduling complexity, more information management (what to share between partners, what belongs to each relationship separately), and more emotional labour than someone in a V who isn't the hinge. See the hinge partner guide for the specifics of that position.
For the partners at the ends: Having a significant relationship with someone who also has another significant relationship, with someone you didn't choose and may or may not know well. Your metamour is connected to your partner in ways that affect your relationship, but you have no direct influence on that connection. Navigating this well tends to involve developing a genuine relationship with your metamour (or at least functional goodwill) rather than treating them as an abstraction.
V relationships are more common than triads
Despite the cultural visibility of throuples and triads, V configurations are significantly more common in polyamorous networks. This is partly because genuine three-way romantic chemistry is relatively rare, for a triad to work, all three people need to be attracted to and interested in all others. A V only requires the hinge to have two compatible connections.
V configurations also arise naturally from ordinary relationship development: a person in an existing relationship develops a new connection, and the two partners don't form a romantic connection with each other. That's a V, even if nobody named it that.
When V configurations evolve
V configurations sometimes evolve into triads when a connection develops between the two people at the ends. This can be organic or something all three people choose to explore.
It's worth approaching this transition deliberately. A V becoming a triad is a structural change for everyone: the hinge loses their unique connective position; the two metamours become partners; the emotional geometry of the whole arrangement shifts. These transitions work better when they're explicitly negotiated rather than allowed to just happen.
The reverse also happens: triads sometimes become V configurations when one connection within a triad fades or ends, leaving one person as the connective point between two people who are no longer romantic with each other.
V relationships in practice
Most polyamorous networks contain V configurations, often multiple overlapping ones. When several people are each in V relationships whose arms intersect, the resulting network is sometimes called a polycule, a larger web of connections that can be mapped as an interconnected graph.
The V is not considered more or less valid than the triad, it's simply a different structure with different dynamics. People's preferences for being a hinge versus being at the end of a V, or for V structures versus more interconnected triads, vary considerably and are worth knowing about yourself.