The Legal Rights of Throuples and Polyamorous Relationships

What is a throuple relationship?

Kuba Kubiszyn, associate family law solicitor at Holmes & Hills, explains the key legal challenges and practical solutions available for throuples and polyamorous couples in England and Wales.

Polyamorous relationships, including "throuples" (romantic relationships involving three people), are becoming increasingly visible in modern society. Whilst polyamorous relationships are on the rise, the law in England and Wales does not currently provide any protections for such couples as it remains firmly rooted in traditional two-person partnerships.

This creates significant legal complications for those in throuple relationships when it comes to the family home, financial matters and children.

Our Specialist Family Law Solicitors regularly advise couples in non-traditional relationships about how to protect themselves and their loved ones within the current legal framework.

Does the law recognise throuples?

The most important point to understand is that English and Welsh law does not recognise relationships involving more than two people. You cannot:

• Enter into a marriage with more than one person (bigamy remains a criminal offence)
• Register a civil partnership involving three people

This lack of recognition means throuple relationships have no automatic legal protections, regardless of how committed or long-standing they may be.

Property rights for throuples and polyamorous couples

Many people mistakenly believe in "common law marriage" – the myth that cohabiting couples automatically gain rights similar to married couples. This is not true in England and Wales, regardless of how long you've lived together.

When three people live together and contribute to a shared home, the legal complexities multiply and, without clarifying intentions, could lead to prolonged litigation if the relationship comes to an end. There are legal steps you can take to protect your position and avoid conflict.

In respect of property ownership, think carefully about how you want to own property. Who will own the property, who will have an interest. What will happen on one party’s death.

What happens if a polyamorous relationship ends?

If the relationship ends, what do you want to happen? A cohabitation agreement can confirm aspects of the parties’ cohabitation, including and contributions to joint expenses and bills; and what will happen in the event the relationship breaks down.

How we can help

Holmes & Hills specialist family department can advise you how to protect your position in the event a relationship breaks down. Contact us today for expert legal support.