A comedian and television presenter well-known in England, Justin Lee Collins, made his girlfriend recount every sexual experience she had ever had for a notebook he kept as part of a campaign of domestic abuse.
The 38-year-old also made Anna Larke throw away her DVD collection "on the basis she found some of the male actors in the movies to be attractive", it is alleged.
The performer assaulted and harassed his girlfriend during their nine-month relationship last year, said prosecutor Peter Shaw, at St Albans Crown Court.
A jury of nine women and three men heard that Collins made Ms Larke, 38, close her email, Facebook and Twitter accounts after reading her messages.
They met while Collins was still married. Ms Larke helped him move from Bristol to Kew, south west London, in January 2011, and she moved in with him.
Mr Shaw said: "The main part of that relationship was characterised by this defendant exerting control over her, verbally abusing her and physically assaulting her."
The defendant "exhibited a desire to restrict" his girlfriend's activities, the barrister said.
"Significantly, Mr Collins resorted to compiling a dossier in a notebook.
"The purpose of the notebook was to list every sexual experience with every one of Ms Larke's previous lovers or partners.
"He would ask her questions and then write it down.
"She felt it was a disgusting thing to have to do and she was worried that she would lose him by doing it.
"He sometimes accused her of lying about the details of her past and initially she did lie about her past because she regarded it as acutely private but he told her that it would help the relationship and help him deal with her past."
Mr Shaw added: "When Mr Collins was satisfied that Ms Larke had provided a sufficient amount of information he signified his satisfaction with the word 'Done'."
At the meantime, Collins denies harassing his ex-partner.
How far would you go in your relationship? Is it really that neccessary to interrogate your significate other?