A married nursery worker had sex with a 13-year-old boy and had his baby.

Leah Cordice, who was 17 at the time, from Windsor, when she drunkenly walked into the boy’s bedroom where he was playing computer games and pulled down his trousers before having sex with him, the court heard.

She continued having unprotected intercourse with the child on average twice a month for a year, right through her pregnancy and after she gave birth to a girl, it is claimed.

Ms Ong, speaking of the police interview, told the jury: ‘The boy said that he and Ms Cordice started having sexual intercourse when he was 13 years old.

‘The defendant, Ms Cordice, was drunk, she went around to his address, she went into his bedroom and at first, they talked normally and he continued playing on his Xbox and watching YouTube.

‘Ms Cordice then sat on his bed and started to hug him and kiss him and it carried on.

‘He said, “I could not really say no. She would have kept asking and asking me to have sex”. Afterwards, he felt that it was a bit weird and that she did not say anything to him afterwards.’

The boy had been the first person who Cordice told that she was pregnant, the jury of seven men and five women heard, and she had shown him an app on her phone which suggested the date she had conceived was the first time they had had sex.

While they carried on having sex, Cordice had married her long-term partner and had given birth to her daughter.

In a police interview video shown to the jury, the boy told how Cordice’s husband had found out about her relationship with him.

The boy told investigators: ‘Her boyfriend found out. He did not really say anything. He got angry at first. He started shouting at me. Then he did not really say anything to me.

‘She spoke about him to me sometimes, just how he had been annoying her, accusing her of stuff.’

The prosecutor told how Cordice, who had begun studying at a child care course and had been working in a children’s nursery, had been forced into taking a DNA test after social services became involved once the boy’s mother phoned police.

This showed the 13-year-old boy was the baby’s father.

Police arrested Cordice at her home in Windsor, Berkshire, on July 9, 2018 and she was later interviewed under caution.

The jury heard she had provided a prepared statement, saying: ‘I deny any sexual contact with the complainant.

‘He has always had a crush on me and would always make inappropriate remarks and do inappropriate things such as grab me and annoy me. We did not have sexual contact.’

Despite DNA evidence to the contrary, she insisted: ‘The complainant is not the father of my child.’

Since her first police interview, the DNA test was carried out which the prosecution said meant it was 14 million times more likely than not that the 13-year-old boy was the father of Cordice’s child.

Cordice, appearing in the dock wearing a grey jacket with a furry lapel, was expected to claim that the young boy had raped her, the jury was told.

However, Ms Ong said: ‘It may come as a surprise to you that she, Ms Cordice, now accepts that there was sexual activity between her and the boy.

‘What she may say is that she was raped by the boy. The prosecution’s case is that there was no such thing but these individuals agreed to have sexual intercourse with one another.

‘The prosecution’s case is that this claim of rape is a lie, it is an attempt to make the complainant go down in your estimation of him.

‘Her assertion that she still believes that the boy is not her child’s father, the prosecution will say, is patently untrue.’

The defendant still denied that the boy was the father of her child, the jury heard.

Cordice denies five counts of sexual activity with a child, three which were said to have taken place while she was aged 17 years and two while she was 18 years old.

The trial continues.