Millions are mourning Liam Payne's death, especially fans from One Direction's peak.

Psychiatrist & social commentator Dr. Tanveer Ahmed explains to Mike that these one-way "parasocial" relationships allow fans to project fantasies and explore personal emotions, with boy bands often marking nostalgic stages of adolescence.

This grief reflects both the loss of Payne and, in part, aspects of our own past.

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