A British daycare worker who regularly had sex with a 13-year-old boy gave birth to his baby — and married her adult boyfriend to bolster the lie that the child was his, a court was told on Tuesday.

Leah Cordice, 20, started abusing the youngster in 2017 after walking into his bedroom while he played video games, pulling down his pants and having sex with him, Reading Crown Court was told, according to Metro UK. She was aged 17 at the time the abuse began.

She continued having unprotected sex with the boy about twice a month for a year, stopping just before he turned 14, and after she turned 18, in 2018 — and then gave birth to his baby daughter, her trial was told.

The schoolboy, who cannot be identified for legal reasons, was the first person the Berkshire nursery worker confided in about the pregnancy, showing him info on a phone app that suggested she conceived the first time they had sex, the report says.

Cordice instead married her long-term boyfriend, who was not identified, continuing to make him believe the child was his, the trial heard.

Cordice was arrested at home in Windsor in July 2018 after the boy’s mom became suspicious.

She insisted in a statement at the time that they “did not have sexual contact” — and instead blamed the boy.

“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,” her statement had claimed.

She now admits they engaged in sexual activity — but continues to deny the child was conceived by the boy, even though DNA tests showed it was 14 million times more likely than not, the jury heard, according to Metro.

The boy later told police that he “could not really say no” to her, but felt “weird” and hurt that she “did not really care about me,” the court heard.

The nursery worker has denied five counts of having sexual activity with a child. Her trial continues.