Manchester's Minshull Street Crown Court heard that Shane Stott, 18, contacted the teenaged girl through Facebook and attempted to arrange a meeting, mirror.co.uk reported on Saturday.
"He sent a message which said 'hi'. There was another message which said 'come mine', but she decided to reply and say she had things to do," prosecutor Mark Monaghan told Judge Stewart Driver.
"She received a message saying 'you promised you would meet me you little b****'."
"Another said 'I will just post pictures on Facebook and say they are you'.... He was clearly upset that the meeting he planned was not going to happen," the prosecutor added.
"She blocked him and got a message from a friend that was a screenshot of the defendant's Facebook with a video of a girl performing a sex act with (the victim's) phone number posted," Monaghan added.
The court heard that alongside the video -- which was of a different girl -- Stott wrote that the victim would perform sexual acts for people if they phoned her, leading to her receiving 25-30 calls.
Defending lawyer David Bruce said at the time of the offence Stott was vulnerable because his grandmother who he previously lived with had recently died.
He added that a psychological report indicated Stott had a mental age of a 10 to 13 years old.
Stott was sentenced to four years in a young offenders institute. He was also added to the sex offenders' register indefinitely.
"It was a very mean offence, the defendant intended the consequence. You repeatedly posted obscene videos and pictures. It gives a flavour of the defendant's character, including his vindictiveness, when his attempts were thwarted. He is, in my judgement, a dangerous offender," Judge Driver said while sentencing Stott.
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