A WOMAN of 46 said she had sex with a 14-year-old boy in a bathroom because she believed he was 17, a court has heard.
Amanda Lockhart romped with the teenager as he took phone pictures of her naked, the Old Bailey was told.
Prosecutors said the boy was reluctant when she "demanded" sex.
But he "did not feel there was anything he could do to stop her sexual advances".
Lockhart, of Croydon, South London, admitted having sex with him but claimed he had a passport showing he was 17.
Lockhart denies five counts of sexual activity with a child.
However, Lockhart claims she was duped into sex after the boy said he was 17-years-old, even showing her his passport to prove his age.
She claims he then tried to blackmail her for £500 by threatening to show the naked pictures to others.
'In her police interview, the defendant admitted having sexual intercourse with (the boy) but denied knowing his true age', said prosecutor Jose Olivares-Chandler.
'She said he showed her his passport and told her he was 17-years-old.
'She asserted it was him not her that encouraged sexual activity.' Lockhart said immediately after their romp in the bathroom, the boy turned 'aggressive' and revealed his true age.
However, she said she refused to give in to his blackmail attempt.
Mr Olivares-Chandler said Lockhart started to pursue the boy at Christmas 2013, getting him to touch her legs when they were alone in her car.
'He said he didn't want to but she asked him again and he complied with her demands', he said.
The trial continues.