My Mysterious Boyfriend (Larry Stylinson)

Schizophrenia

(/ˌskɪtsɵˈfrɛniə/ or /ˌskɪtsɵˈfriːniə/)

A psychotic disorder characterized by withdrawal from reality, illogical patterns of thinking, dellusions, hallucinations, and hearing of unknown voices.

Dissociative identity disorder (DID)

a mental disorder on the dissociative spectrum characterized by at least two distinct and relatively enduring identities or dissociated personality states that alternately control a person's behavior, and is accompanied by memory impairment for important information not explained by ordinary forgetfulness. These symptoms are not accounted for by substance abuse, seizures, other medical conditions, nor by imaginative play in children.

Harry is not your typical boyfriend.