Cleared: Teacher Louise Aspinall outside Manchester Crown Court

A teaching assistant branded a 'predatory Mrs Robinson' after being accused of having an illicit fling with a 13-year-old schoolboy was cleared by a jury today.

Married mother of two Louise Aspinall, 36, was said to have to had sex with the youngster on three separate occasions - including on Valentine's Day - over a month.

The teenager later boasted of his alleged liaisons to his brother, who 'swore' that he wouldn't tell their parents.

He then bragged to a close friend about his affair with the teaching assistant at Swinton High School in Salford, Greater Manchester.

The boy even claimed that she was pregnant with his child during the fair that allegedly ensued after she confided in him about marriage problems with her husband.

Aspinall, from Salford, stood trial charged with seven allegations of having sexual activity with a child and was compared to sex-mad housewife Mrs Robinson played by Anne Bancroft in the 1967 film the Graduate.

But she was cleared of six charges after claiming she was the victim of 'pernicious lies' and of a seventh charge on the orders of a judge. The jury took just 79 minutes to return their verdict.

Earlier Aspinall's lawyer Marsha Myers told Manchester Crown Court said the youngster had been harbouring 'schoolboy fantasies about older women' and was 'showing off' to pals.

She added: 'She has been falsely painted as a nymphomaniac and a predatory Mrs Robinson. This boy told porky pies because he wanted to impress his friends by saying he had had sex with a teacher.

'These were toxic whispers which had explosive' consequences. The boy was a teenage Hans Christian Andersen telling fairytales. How few words it took - "I slept with Mrs Aspinall". But from a ripple, a trickle, a tsunami grew.

'I would not be doing my client's case justice if I did not mention the acronym 'milf', which has entered into every day colloquial English language usage.

There's an inference Mrs Aspinall is some kind of nymphomaniac who is so unable to control her sexual urges she targets a 13-year-old boy. I ask you to jettison this suggestion, which is highly offensive to womankind Marsha Myers, lawyer

'There's an inference Mrs Aspinall is some kind of nymphomaniac who is so unable to control her sexual urges she targets a 13-year-old boy. I ask you to jettison this suggestion, which is highly offensive to womankind.'

During the trial, the court was told how friends of the boy said he was 'happy and proud' after claiming he lost his virginity to Aspinall despite her being more than 20 years his senior.

The jury heard the pair first kissed in February 2013 after they 'wrestled' over a mobile phone when they were left alone together. The boy 'laughed it off', but they had sex one week later and Aspinall also performed sex acts on him, it was claimed.

After one alleged tryst, the boy, who said he was 'confused' and 'went along with it', relaxed by playing on the Xbox, the court heard.

Aspinall was arrested in December 2013 when the boy's mother heard the rumours and took him to a police station.

He initially denied any inappropriate activity had taken place but visited the police station again the following day and made the claims in full.

Workplace: Louise Aspinall was a teacher at Swinton High School in Salford, Greater Manchester

Recalling their first sexual liaison the boy said: 'She sat on me. One leg on one side and the other on the other side. My legs were in between hers. Her arms were next to me and mine were holding her. She got me a condom when I took my pants off. I put it on. After I put it on she sat on me.'

Questioned about the second time they allegedly had sex, on Valentine's Day 2013, he said: 'It was just the same as the first time except half way through I got on top. When I was doing it she was asking me not to tell anyone because she could get in trouble and get her kids taken off her.

'I told my brother what happened the day after I did it the first time. He swore down he wouldn't tell mum or dad. I also told my friend I had sex with Mrs Aspinall.'

Relief: The teacher was finally cleared after being arrested in December 2013

The boy's friend, said: 'We were in my living room and there were a few friend's there. The topic of sex came up and then he said he wasn't a virgin. I asked who it was and he wouldn't tell me. I then started to ask for clues like "what year is she in?" and he said she wasn't in a year and she had left school. He then said it was Louise Aspinall.

'He said she said she liked him and that they had sex quite a bit. I didn't believe him at first. I didn't really say anything, I was just shocked. He seemed happy and proud.'

He said he spoke to the young boy again after rumours began spreading about the boy's supposed inappropriate relationship with Aspinall in the autumn of 2013.

The friend added: 'He said she was pregnant and it was his child and she told him she was going to get rid of it. I didn't believe it. My mum was asking him if the rumours were true because it needed to be reported if they were. He said it was true but he didn't want to report it.'

However, Aspinall had always denied the claims and her lawyer claimed that the tales were a result of his boyhood fantasies and the boy had simply wanted to impress his friends.

She claimed that the boy had a 'lower than average IQ' and did not understand the magnitude of the impact his claims would have on the lives of those around him, reports the Manchester Evening News.

Aspinall's lawyer, Marsha Myers, also complained about the way she was painted as a sex maniac during the case, adding that it was offensive to women before she was finally cleared of the charges that have hung over her for nearly 18 months.