Whether you’re in a monogamous relationship or a consensually non-monogamous relationship, every couple develops relationship agreements. Some are spoken openly, while others quietly emerge over time. They may relate to exclusivity, boundaries, finances, parenting, friendships, communication, intimacy, or simply how life is shared together. These agreements help create trust and clarity, but one of the most important relationship skills is knowing when to revisit them.

Many couples spend a great deal of energy trying to get these agreements right from the beginning. It makes sense. We often believe that if we can create the perfect agreement, we’ll avoid future conflict. But relationships don’t work like legal contracts. They work more like living systems.

In couples therapy, one of the things I notice is that the healthiest relationships are not necessarily the ones with the best agreements. They are the ones that know how to revisit them.

I often encourage couples to think of their agreements as experiments rather than permanent decisions. An agreement reflects who you both are at a particular point in time. It is your best understanding of yourselves, your relationship, and what feels right today. As life unfolds, that understanding naturally changes.

This is especially true in long-term relationships. A demanding new career may leave one partner with less emotional capacity at the end of the day. Children arrive and priorities shift. Menopause can change how someone experiences desire, touch, intimacy and closeness. Illness, grief, ageing, retirement, or opening a relationship can all reshape what we need from one another. None of these experiences mean the relationship is failing. They simply mean the people within it are changing.

The relationship is not asking you to become who you once were. It is inviting you to become acquainted with who you are now.

What often creates difficulty is not that someone has changed. It is the belief that the agreement should not.

Rigidity can sound like, “But this is what we agreed to,” or, “You’ve changed.” Sometimes it is less obvious. It might look like avoiding the conversation altogether because one partner worries that raising the topic will disappoint the other. It can sound like, “Let’s not rock the boat,” even though both people know something important has shifted. Sometimes people continue honouring an agreement that no longer fits because they fear what changing it might mean about the future of the relationship.

When this happens, couples stop responding to the relationship they have today and begin protecting the relationship they had yesterday.

The conversation becomes much richer when we ask different questions. What have we learnt about ourselves? What has surprised us? What feels different now? What do we need from one another at this stage of our lives that we didn’t need before?

These conversations are rarely comfortable. They often require us to tolerate uncertainty, disappointment and grief. They ask us to stay connected to our own experience while remaining open to our partner’s. They invite us to recognise that growth in one person does not have to threaten the relationship. It can become an invitation for the relationship itself to grow.

Perhaps the strongest relationships are not those that never change their agreements. They are the ones that trust they can keep returning to the conversation with honesty, curiosity and respect.

When agreements evolve alongside the people within the relationship, something unexpected often happens. Partners begin discovering one another again. They become curious about who this person is today rather than holding tightly to who they were five or ten years ago. The way they want to be loved, supported, desired or understood may have changed, and the relationship is given permission to change with them.

In many ways, this is how long-term relationships stay alive. Not because the couple remains the same, but because they continue making space for each other to evolve. It is often in this rediscovery that couples describe feeling as though they are falling in love all over again, not because they have found someone new, but because they have remained curious enough to keep meeting the person their partner is still becoming.