Emilia Marcau, the ex of an Eastenders actor, faces jail after she and a friend posted videos of the star having sex on his Facebook page in order to shame him.
It happened after the actor explicitly told her to delete the video when they broke up, and Emilia and friend Sarah McKenna have pleaded guilty to revenge porn charges.
The court heard that Emilia sent the actor (who can't be named) 'several abusive messages calling him a b****** and a c***'.
and she also sent messages to the actor's new girlfriend, saying: 'He's a c*** when it comes to girls.'
Sarah McKenna posted stills from the video onto his Facebook page, with Emilia's face obscured by a devil emoji, but the actor's face clearly visible.
The two women are set to receive either an immediate or suspended jail sentence next week, Judge Elizabeth Warner said.
Revenge porn was made illegal last year after the rise of social media saw a rise in people using intimate images to humiliate their exes.