Relationships have always been a fascinating and complex journey. Two people build a close, intimate bond filled with emotions, shared moments, and often physical closeness. But there’s one factor we don’t talk about enough that can impact many relationships: a third person. They don’t have to be physically present—sometimes just a thought is enough.
Walking the Line Between Fantasy and Reality
We’ve all caught ourselves noticing someone or imagining what it would be like to spend time with another person. It could be a friend, a coworker, or even a complete stranger who somehow sparks something in us. While it might seem harmless at first, these fantasies can grow stronger than we expect.
Relationship therapist Esther Perel reminds us that “desire isn’t always about wanting someone else, but about reconnecting with ourselves.” Often, it’s not the third person that matters most, but the feelings they awaken inside us. Still, if we give too much attention to these thoughts, they can shake the foundation of our relationship.
Why Are We Drawn to Someone Else?
Psychology shows it’s natural to be attracted to novelty. Anthropologist Helen Fisher’s research reveals that our brain’s reward system lights up with new, exciting experiences—whether it’s a fresh hobby, a new adventure, or a new person.
Often, we don’t even realize it, but we crave recognition, adventure, or discovering parts of ourselves that get pushed aside in everyday life.
A third person—even if only in our minds—can help us feel that spark again. The challenge starts when this excitement begins to overshadow the feelings we share in our current relationship.
How Does It Affect Daily Life?
Sometimes it’s just a fleeting daydream, but other times it lingers. Even if nothing shows on the surface, inside, our mood shifts, our connection with our partner changes, and intimacy can be affected.
A 2018 study (Journal of Sex & Marital Therapy) found that fantasies about a third person can sometimes have positive effects: they might inspire some to appreciate their partner more and bring fresh energy into the relationship. But for others, these thoughts can distract and create emotional distance.
What Can You Do?
The first step is always recognizing and accepting your feelings. There’s no need to feel guilty for being interested in someone else—that’s human. The real question is how you handle it.
Being open with your partner and honestly sharing your desires can prevent many misunderstandings.
Equally important is seeking new sparks within your relationship. Shared activities, common goals, or even a spontaneous surprise can breathe new life into everyday moments. Growing and evolving together strengthens your bond far more than any outside distraction.
The Power of Inner Work
It’s natural to daydream about others sometimes—that’s part of being human. The key is how we relate to those thoughts. Building self-awareness, self-reflection, and self-esteem helps us understand what we truly desire.
As relationship expert John Gottman says: “The secret to stable relationships isn’t the absence of temptation, but the conscious choice to turn toward each other, not away.”
When we can do that, the shadow of a third person doesn’t weaken our relationship—it can actually make it stronger.
