Sexy dream or emotional nightmare? Experts reveal the danger signs to watch out for if you’re considering an open relationship

Opening a relationship isn’t a fix for trust issues or a failing partnership. As interest in ethical non-monogamy grows, two relationship therapists explain the warning signs you’re not ready —and the conversations every couple should have before taking the leap.

Conversations about love and commitment are changing. While monogamy remains the most common relationship structure, increasing numbers of people are exploring alternatives, including open relationships, ethical non-monogamy (ENM) and polyamory.

For some, it’s about challenging the idea that one person should fulfil every emotional and sexual need. For others, it’s driven by curiosity, autonomy or a desire to build relationships that reflect their values rather than tradition.

But despite growing visibility, therapists say one misconception persists: that opening a relationship is an easy way to solve problems.

“The reality,” says psychosexual and relationship therapist Lucy Frank, “is that it requires a great deal of communication, trust and emotional honesty. It isn’t something couples should drift into.”

So how do you know whether an open relationship is something worth exploring — or a sign you should focus on strengthening your existing relationship first?

The biggest red flag: hoping it will save your relationship

According to Frank, the most common mistake couples make is viewing an open relationship as a solution to problems that already exist.

“If there are trust problems or communication difficulties already present,” she says, “those will usually become more amplified rather than resolved.”

Rather than repairing a struggling relationship, introducing other partners often places additional pressure on it.

“The starting point is that the relationship should feel safe, secure and committed first,” Frank explains. “Opening a relationship is not a repair strategy — it’s a relationship structure.”

If conversations regularly end in conflict, trust has been broken or one partner already feels emotionally disconnected, therapists say those issues should be addressed before considering any change to the relationship.

Warning sign #2: One person wants it far more than the other

Successful non-monogamy relies on genuine, enthusiastic agreement — not reluctant compromise. Sex and relationship therapist and clinical sexologist Ilka Kemp-Hall says agreeing to open a relationship simply to keep a partner happy is unlikely to lead to a positive outcome.

Instead, she encourages couples to move at a pace that feels comfortable for everyone involved.

“There’s no one right way to do non-monogamy,” she says. “What matters is that it’s consensual, intentional and grounded in care and clarity.”

Frank agrees, adding that consent should go beyond simply saying yes.

“I work with individuals to not just agree, but to agree with enthusiasm. Consent is not just about saying yes — it’s about really working out if this is something that could enhance their relationship, or their sense of self.”

Warning sign #3: You’re avoiding difficult conversations

Many people assume open relationships have fewer rules than monogamous ones. In reality, Frank says the opposite is often true.

“Many consensually non-monogamous relationships involve more conversation about boundaries, expectations and feelings than many monogamous ones.”

Couples need to be able to discuss uncomfortable topics honestly, including jealousy, insecurity, expectations and what happens if boundaries change over time. “A line I often say is: ‘Open relationships aren’t the absence of rules — they’re often the result of far more intentional ones.'”

If those conversations feel impossible before opening a relationship, therapists say they are unlikely to become easier afterwards.

Warning sign #4: You haven’t talked about your motivations

Before discussing boundaries, Frank encourages couples to ask a simpler question: Why do we want this? People choose consensual non-monogamy for many different reasons. Some value sexual autonomy. Others want the freedom to explore connections with more than one person, or simply feel that love and attraction don’t have to be exclusive.

Those motivations matter because they shape the type of relationship a couple is hoping to build. Problems arise when partners have completely different expectations but assume they’re on the same page.

“Talk about motivations, fears, expectations and boundaries before anything happens,” Frank advises.

Warning sign #5: You’re rushing the decision

Curiosity doesn’t have to lead immediately to action. Kemp-Hall encourages people to think of openness as a skill set rather than a label.

“This means building strong communication, being willing to navigate emotions like jealousy and moving at a pace that feels safe for everyone involved.”

Simply talking about possibilities can help people better understand themselves and each other — regardless of whether they ultimately decide to open the relationship.

What therapists say healthy open relationships have in common

Despite persistent myths, neither therapist believes successful open relationships are defined by having fewer boundaries.

Instead, they tend to share several qualities:

• Clear and ongoing communication.
• Mutually agreed boundaries.
• Emotional honesty.
• Trust.
• Enthusiastic consent.
• A willingness to revisit agreements as relationships evolve.

Perhaps surprisingly, those are the same qualities that underpin healthy monogamous relationships.

Open relationships aren’t inherently healthier — or less healthy — than monogamous ones. What matters is whether everyone involved has consciously chosen the relationship they’re in and feels safe, respected and heard within it.

For some couples, consensual non-monogamy can be a fulfilling way to structure a relationship. For others, monogamy remains the right fit.

The key, both therapists agree, is not following a relationship template because it’s expected, nor embracing an alternative because it’s fashionable. It’s choosing a relationship structure that reflects your shared values — and making sure it’s built on trust, communication and genuine mutual consent from the very beginning.

Words: Yasmina Floyer, Images: Shutterstock