The soap actor, 48, admitted being an alcoholic, having a string of one-night stands and an affair - as his wife underwent chemotherapy for breast cancer.
The court heard Mr Le Vell was a man with demons, whose alleged victim was either telling the truth or had given an Oscar-winning performance in court.
Mr Le Vell, an actor in the soap for 30 years, was in the witness box for two hours defending himself against 12 child sex abuse charges.
The alleged victim claims Mr Le Vell repeatedly sexually assaulted and raped her.
Under cross-examination by Eleanor Laws, QC, prosecuting, he denied laughing or sneering as the victim's mother gave evidence.
Mr Le Vell agreed it was his case the alleged victim had told lies to her mother, then police and then to the jury in court.
Miss Laws said: "Pretty good performance, don't you think? If she is lying, very convincing, wasn't it? Almost Oscar-winning?"
"And the thing is that you just don't know why (she is lying)?"
The actor said: "No, I don't."
"Unless it is quite simple - you did these things and she is just telling the truth," Ms Laws said.
Mr Le Vell denies five counts of rape, three of indecent assault, two counts of sexual activity with a child and two of causing a child to engage in sexual activity.
The trial continues.