Lee Wayne Crutchley, aged 45, denies a string of 16 sex offences against five girls including indecent assault, sex with a girl under 13 and two charges of rape.
David Gordon, prosecuting at Sheffield Crown Court said Crutchley, of Victoria Street, Dinnington, Rotherham, took advantage of his victims’ innocence and naivety.
He said Crutchley was in a ‘short-lived’ relationship, which went no further than kissing, with the first victim which started when she was 13 and he was in his mid twenties.
“He knew she was just a school girl,” he said.
“He told her he would often see her getting off the school bus - she would have been in her school uniform on those occasions.”
“He was an older man taking advantage of her innocence and naivety, this pattern of offending repeats itself over the years almost up to the present time.”
The second victim was 12 or 13 when she had a sexual relationship with Crutchley and fell pregnant but suffered a miscarriage.
“He told her not to tell anyone what was going on,” said Mr Gordon.
“He had sex with her over a four-year period several times a week.”
Mr Gordon said Crutchley did not force himself on the girl but because of her young age she was unable to consent.
The third victim was indecently assaulted by Crutchley in the mid nineties when she was about 13. She later went on to have a relationship with him as an adult.
Crutchley is accused of sexually assaulting and raping her daughter.
He denies eight counts of indecent assault, two of sexual intercourse with a girl under 13, three of assault by penetration, one of buggery and two of rape.
The trial continues.