The Guardian's review of Heartstopper Forever, the Netflix film-length finale to the LGBTQ+ teen series, argues it delivers poignant moments but ultimately plays it safe, sanitising its now 18- and 17-year-old leads' first steps into adulthood. This matters because the film's insistence on keeping Nick and Charlie squeaky-clean, even as it tackles heavier themes, undercuts the emotional maturity the story is meant to represent, leaving it feeling like fan service rather than genuine growth.

The review notes that star Kit Connor himself wished the couple could have behaved more messily and realistically, including cheating, rather than being sanitised. Structured across four sections (Autumn, Winter, Spring, Summer, plus an epilogue) covering the couple's final year at school, the film addresses Nick's anxiety and drinking and Charlie's returning eating disorder, but resolves them abruptly, while neglecting the Tao and Elle relationship arc. The critic also highlights heavy reliance on nostalgic callbacks and flashbacks to earlier seasons, suggesting a lack of trust in the show's devoted fanbase and a reluctance to take the characters anywhere genuinely new.