In May 2017, 16-year-old Jchandra Brown hanged herself at a campground in Payson, Utah, while her friend Tyerell Przybycien recorded her on her cell phone. His body was discovered the next day.
Prosecutors said that Przybycien bought the rope and tied Brown's noose around his neck, and bought the compressed air he used to throw himself out before he died.
Przybycien also provided a comment as he recorded his last moments on a 10-minute video.
Przybycien, who is now 19, was charged with first-degree murder, but in October he consented to plead guilty to homicide to pedophilia. He was given a credit of 580 days for the time served in prison.
He added that he hopes Brown's family will forgive him "for my immature, reckless and reckless decisions."
Brown's mother, who brought a large framed photograph of Jchandra to court, said she wanted Przybycien to be in jail.
"I do not want him out causing pain and ruining someone else's family, someone else's children," he said, according to KSL. "I can not describe the pain of losing a child."
Both the defendant and the defendant agreed that Przybycien was involved in Brown's death. The state had said that Brown would not commit suicide if she had not been involved with Przybycien, whom they talked about in the texts and interviews.
His defense, however, says that Brown eventually decided to end his life, and hanged himself at the Maple Lake Campground. The site is located about 15 miles south of Spanish Fork, where Przybycien lived, and about 25 miles south of Provo.
CNN contacted the prosecutor and defense lawyers, but received no immediate answers.
CNN affiliates reported that Przybycien was also convicted in an unrelated five-year case, which will serve in the same period as his murder conviction.
The case prompted Utah to approve a law this year making it illegal for someone to help another take their own lives.