Robert Morrison told the youngster, who can’t be named for legal reasons, that he would grab her from behind when she was alone.

The Glennifer Drive man was arrested by police probing the rape threats and admitted what he’d done.

But when he was charged with the rape threats he denied being responsible.

He went on trial at Paisley Sheriff Court over the comments, claiming they had been sent from a copycat account mimicking the bogus ones he’d set up.

Eamonn McGeehan, defending, made a no case to answer submission, saying that even though Morrison had confessed to police what he’d done there was no evidence to say the comments had been sent from the profiles he created.

But Sheriff Tom McCartney ruled Morrison was responsible and found him guilty of making offensive comments to the youngster through the popular social networking site back in 2012.

He deferred sentence for Morrison to be assessed by social workers.

And when the 19-year-old returned to the dock on Monday, February 9, his lawyer said he had also suffered because of the comments he made.

McGeehan also said Morrison had been left with a criminal record because of his actions.

He also said that his life would be affected by what he had done and that he may struggle to find employment in the future as he now had a criminal record.

Sheriff McCartney spared Morrison jail, making him the subject of a Community Payback Order, telling him to complete 140 hours’ unpaid work over the next 12 months.

As he did so he told Morrison, who works as a driver, that the punishment was being given as a direct alternative to a custodial sentence.

And he warned him that he could be jailed if he was brought back to court for breaching the court order.

He could have placed Morrison on the Sex Offenders Register but elected not to, meaning he does not have to notify the police every time he moves home.

Morrison - a former Barrhead High School pupil - set up pages in the names of porn stars Paige Turnah and Faye Reagan.

He used the bogus profiles to start chatting to girls and the chats he had with the youngsters, who were just 14 at the time, quickly turned sexual.

When their racy conversations dried up Morrison threatened to rape one of the girls he was messaging between May 3 and 10, 2012.

Asked if he had been involved in a sexual conversation with one of the girls and had fallen out with her, he replied: “I think I just started to threaten her sexually.

“I think I must have said I would rape her but I can’t remember that well.” During the interview he said he got angry with another girl as well and made similar threats.

He said at the time: “I said I would meet up with her and attack her on her own.

“Just attack her and surprise her, if she didn’t see me coming, from behind.” He told the officers he knew who Faye Reagan and Paige Turnah were from visiting porn sites online and admitted he’d set up the fake Facebook pages for the actresses.

The girl Morrison threatened to attack in the street gave evidence from behind a screen so she did not have to see him.

She aid her pal was “worried and a bit scared” after receiving a rape threat through the site.

A police computer expert said it was possible to impersonate others on Facebook - after saying that a test he’d done on Morrison’s computers did not prove he’d sent the girls the messages.

But Morrison was convicted of sending offensive internet messages to one of the girls and walked free from court on Monday.