Tina Greenland shared a night of passion with divorced Nicholas Mouna, who employed her to care for his disabled daughter.
The mother-of-three sent a text to her boss the next day saying: ‘Had a lovely night... hope you don’t think I’m some kind of tart.’
But when Mr Mouna, 55, made it clear he did not want a relationship the vengeful nanny called police and claimed she had been raped after her drink had been spiked.
Insurance broker Mr Mouna was arrested and sacked from his job despite never being charged with any crime, a court heard.
When detectives looked at text messages the pair had exchanged they realised Greenland had made up the rape claims.
The 49-year-old maintained her innocence throughout her trial, but her account of what happened in December last year was rejected by a jury.
Jailing Greenland for perverting the course of justice, Judge Nigel Van Der Bijl quoted poet William Congreve, saying: ‘Hell hath no fury like a woman scorned.’
He added: ‘This is serious because people who make false allegations make it harder for real victims to be believed.’
Greenland, of Folkestone, in Kent, screamed: ‘Oh no, my God no,’ as the sentence was passed.
The court heard after being rejected by her boss, Greenland tried to take an overdose of tablets and vodka.
Paul Hogben, defending, told Canterbury crown court that Greenland ‘couldn’t cope with rejection’.
He added: ‘She is not a bad person, but by the jury’s verdict she did a bad thing. She has made a terrible mistake.’.