A newly discussed dating habit could help explain why some people struggle to build lasting relationships.
After recent attention on so-called ‘spoiled pig syndrome’, another pattern is now being talked about as a possible obstacle for singles navigating romance in 2026. The label has picked up traction in lifestyle and relationship coverage this year, with writers and therapists describing it as a way to name a familiar pattern: someone seems interested at first, then pulls back when closeness starts to feel real. ([self.com](https://www.self.com/story/puffer-fish-dating-trend))
Known as ‘puffer-fishing’, the behavior describes someone pulling away, acting cold, or pushing a love interest back just as things begin to feel more serious. It is not a formal clinical diagnosis, but rather a viral dating term that draws on the image of a pufferfish inflating itself when threatened. ([psychologytoday.com](https://www.psychologytoday.com/us/blog/a-funny-bone-to-pick/202605/how-puffer-fishing-is-a-big-dating-risk/amp))
It often shows up when a relationship starts moving beyond the casual stage and one person begins to feel unsettled by the growing emotional closeness, according to relationship expert Lisa Chen.
“‘Puffer-fishing’ is essentially emotional self-protection masked as avoidance, chaos, or mixed signals.
“This is a common occurrence with those who are avoidantly attached. Avoidantly attached individuals desire connection, but their nervous system starts to interpret intimacy as pressure or a loss of control.
“As a result, the person responds and ‘puffs up’ by becoming unavailable, critical, or confusing to regain some space from the relationship and a sense of control.”
Chen also said this kind of reaction is something she frequently notices in people who find it difficult to fully let others in emotionally.
“I often see this with my clients who are emotionally guarded, most often avoidantly attached.
“They want connection, but have long associated intimacy as unsafe and, as a result, self-sabotage the very thing they were hoping for, a relationship with another person.”
While some may think this approach protects them from getting hurt, it can also mean rejecting meaningful connections before they have a chance to develop. Experts writing about the trend in 2026 say it can show up as ghosting, picking fights, becoming less responsive, or suddenly acting more critical just as a relationship gets more serious. ([psychologytoday.com](https://www.psychologytoday.com/us/blog/a-funny-bone-to-pick/202605/how-puffer-fishing-is-a-big-dating-risk/amp))
Chen suggested that dating successfully involves accepting uncertainty rather than trying to manage every outcome.
“Healthy dating requires tolerating ambiguity and releasing a sense of control.
“Instead of withdrawing when someone starts to become closer, it’s more effective to notice the fearful part of you that is reacting to the intimacy and then communicating honestly about it.”
Therapist Julie Newman also told Self Magazine that past relationship wounds can play a major part in why someone develops this kind of defensive behavior. SELF noted that the trend was popularized by therapist and author Kati Morton, who connected it to fear of vulnerability and the urge to “stick your spines out” instead of communicating. ([self.com](https://www.self.com/story/puffer-fish-dating-trend))
“Most of my clients who act like this have learned from family or an ex-partner that closer relationships are unpredictable or mean being criticized,” she said.
She added that many people who behave this way may not even recognize that they are doing it, despite how much it affects their dating life.
Relationship experts also say the flip side matters: if you are dating someone who keeps distancing themselves, a calm check-in can be more useful than accusing them of pulling away. If the pattern continues and the other person does not want the same level of commitment, it may be healthiest to step back rather than keep trying to force closeness. ([self.com](https://www.self.com/story/puffer-fish-dating-trend))