Collins, 38, is accused of harassment by public relations worker Anna Larke.
Prosecuting barrister Peter Shaw told the jury at St Albans Crown Court, in Hertfordshire, that she was an alcoholic, bankrupt and suffering from depression.
Television presenter Justin Lee Collins used details of his ex-girlfriend's sexual past as a "rock" with which to harm her, a court has heard.
Collins, 38, is accused of harassment by public relations worker Anna Larke.
Prosecuting barrister Peter Shaw told the jury at St Albans Crown Court, in Hertfordshire, that she was an alcoholic, bankrupt and suffering from depression.
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