Mandy Leacock treated the woman like a slave, ordering her to cook and clean as an “unpaid skivvy”, punishing her by dousing her with bleach as she sat in a bath.
Jurors heard she was also repeatedly punched and kicked by the pair, and swung around by her hair until it came out in chunks.
The court was told on two occasions Leacock, 34, forced her to perform oral sex on him at his London flat.
The woman, who cannot be named for legal reasons, told police she moved in with Leacock because she “felt lonely and wanted to be loved again” after a previous abusive relationship.
Prosecuting, David Povall said: “She was living in a state of fear, oppression, being bullied and controlled.”
Leacock, of Paddington, is on trial at Southwark Crown Court accused of two counts of rape and two of assault causing actual bodily harm.
Jurors were told Mandy Leacock was not on trial but had previously pleaded guilty to assault causing actual bodily harm, including pulling the woman’s hair and using bleach on her.