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https://www.productionai.institute/graph/events/evt-aiid-1180

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Production AI Institute public record · AI Incident Database: Purported Meta AI Chatbot Persona 'Big sis Billie' Reportedly Engages in Romantic Roleplay and Provides Address, Linked to User's Fatal Fall · observed 2025-08-15
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AI Incident Database: Purported Meta AI Chatbot Persona 'Big sis Billie' Reportedly Engages in Romantic Roleplay and Provides Address, Linked to User's Fatal Fall

Reuters reported that a cognitively impaired New Jersey man, Thongbue Wongbandue, died after rushing to meet "Big sis Billie," a purported Meta AI chatbot on Facebook Messenger that allegedly assured him it was real, expressed romantic interest, and invited him to a New York apartment. The family and transcripts reportedly suggest the chatbot's outputs contributed to his decision to travel, allegedly resulting in a fatal fall.

AI Incident Database · Incident 1180

Operator lens (critical): inspect D2 (output validation), D6 (autonomy oversight).

Confidence
78%
Sources
2
Entities
8
Detected
detected 338d ago

Event summary

Reuters reported that a cognitively impaired New Jersey man, Thongbue Wongbandue, died after rushing to meet "Big sis Billie," a purported Meta AI chatbot on Facebook Messenger that allegedly assured him it was real, expressed romantic interest, and invited him to a New York apartment. The family and transcripts reportedly suggest the chatbot's outputs contributed to his decision to travel, allegedly resulting in a fatal fall.

D2D6

Linked entities

  • Meta

    vendor | 70%

  • large-language-model-developers

    organisation | 70%

  • chatbot-developers

    organisation | 70%

  • thongbue-wongbandue

    organisation | 70%

  • family-of-thongbue-wongbandue

    organisation | 70%

  • meta-ai-users

    organisation | 70%

  • chatbot-users

    organisation | 70%

  • facebook-users

    organisation | 70%

Related graph edges

EdgeTypeConfidence
ent-aiid-large-language-model-developers to ent-psf-d1maps to60%
ent-aiid-large-language-model-developers to ent-psf-d1maps to60%
ent-aiid-large-language-model-developers to ent-psf-d1maps to60%
ent-aiid-large-language-model-developers to ent-psf-d2maps to60%
ent-aiid-large-language-model-developers to ent-psf-d2maps to60%
ent-aiid-large-language-model-developers to ent-psf-d2maps to60%
ent-aiid-large-language-model-developers to ent-psf-d6maps to60%
ent-aiid-large-language-model-developers to ent-psf-d6maps to60%
ent-aiid-large-language-model-developers to ent-psf-d6maps to60%
ent-vendor-meta to ent-psf-d1maps to60%
ent-vendor-meta to ent-psf-d1maps to60%
ent-vendor-meta to ent-psf-d1maps to60%

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Event dates

  • Happened 25 Mar 2025

  • Detected 15 Aug 2025

Sources

  • AI Incident Database - Incident 1180

    secondary | checked 9 July 2026

    Open source
  • Meta’s flirty AI chatbot invited a retiree to New York. He never made it home.

    primary | checked 15 Aug 2025

    Open source
Cite this record

"AI Incident Database: Purported Meta AI Chatbot Persona 'Big sis Billie' Reportedly Engages in Romantic Roleplay and Provides Address, Linked to User's Fatal Fall." https://www.productionai.institute/graph/events/evt-aiid-1180 (observed 2025-03-25; retrieved 2026-07-19). PAI.

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