A 16-YEAR-OLD boy has been locked up for two years and four months after showing no remorse for raping a trusting school friend.

The teenager was told by a judge at Bradford Crown Court today that only a sentence of immediate detention met the seriousness of his case.

The judge said the boy would have been jailed for up to seven years if he had been an adult.

He was convicted by a jury last month of two offences of raping a 15-year-old girl behind the Rainbow Centre in Keighley on November 15, 2013.

Judge Jonathan Rose told him: "What you did was to sexually violate an innocent young girl, taking advantage of her trust in you."

He said the teenager had shown no remorse or empathy for his victim who had been left psychologically harmed.

She was bleeding from cuts to her arms and legs after the boy pushed her into thorn bushes when he lured her away from her friends to a secluded spot behind the family centre.

After raping her, he left her in the dark, distressed, crying and shocked.

Later that night, he messaged her on Facebook trying to persuade her not to tell anyone.

"You showed no remorse that evening, nor when you were interviewed by the police, nor throughout your trial," the judge said.

The teenager's barrister, Tina Landale, said he could be punished in the community with an intensive 12 month supervision and extended activity requirement.

She handed Judge Rose a sheaf of references that spoke of the boy being "a warm, kind, likeable lad."

He had an unhappy start in life and it was a spontaneous offence after he had been drinking.

"This is a young man who has all the hallmarks of having a positive future," Miss Landale said.

Judge Rose said the teenager and the girl were friends and she had never wanted a sexual relationship with him.

He was being such a nuisance to her that evening that another youth had to intervene.

He was drunk and she made the mistake of trusting him when he led her to a secluded spot, saying he had something to tell her.

The boy pinned her down in thorn bushes and raped her as she struggled to push him off.

"Your greater strength and your weight enabled you to do what you wanted to do," Judge Rose said.

The girl's school work had since been affected and her family had moved home.

She had lost her trust in people and suffered bad dreams about the defendant.

The boy was ordered to sign on the sex offenders' register for five years.

Judge Rose left the court order in place that bars publication of his identity.