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The Science of Ex-Fixation: Why the Comparison Contest Is Rigged Against You

"Retroactive jealousy" — getting stuck on a partner's past relationships or exes — isn't studied as a verdict on your current relationship. It's studied as a rumination and comparison problem: an intrusive thought you try to suppress (which makes it louder), run against a rival you only know in idealized fragments, using a self you know in exhausting, unedited detail. Research on thought suppression, social comparison and attachment shows this fixation tracks how a mind handles uncertainty, not how good the relationship actually is. Here's where the science on that comparison contest actually points.

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  1. 01 In the 259-person study on attachment and ex-comparisons, what predicted how often someone compared themselves to a partner's ex?

    Hingorani and Pinkus found attachment anxiety predicted more frequent, more negative comparisons to a partner's ex — while relationship satisfaction showed no relationship to the comparisons at all. source

  2. 02 What did Wegner's 'white bear' experiments find happens when you try hard to suppress an unwanted thought?

    Wegner, Schneider, Carter and White found suppressed thoughts came back with a stronger rebound afterward than thoughts people were free to express from the start — a general effect, not one limited to clinical populations. source

  3. 03 According to Broemer and Diehl's 'similarity stings' research, when does jealousy toward a rival peak?

    Broemer and Diehl found jealousy is greater when a rival is similar to the self, because similarity threatens the sense of being uniquely and positively distinct — not because the rival is objectively 'better'. source

  4. 04 In Frampton and Fox's interviews about social media and retroactive jealousy, what often happened when people checked an ex's profile for reassurance?

    Participants used social media to seek reassurance about a partner's exes, but the new fragments of information they found frequently increased uncertainty and drove further monitoring rather than settling it. source

  5. 05 How does Schmitt's 1988 research frame romantic jealousy?

    Schmitt modeled romantic jealousy as arising from social comparison: the threat you feel is a function of how you measure up to a rival on dimensions you personally value, not an objective or moral judgment. source

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