<text>  The man accused of using Facebook to lure a teenager to her death confessed the murder to his ex-girlfriend, according to testimony she gave in court on Monday. Kyle Dube, 21, of Orono, Maine, is accused of using a phony social media account to kidnap 15-year-old Nichole Cable, of Glenburn, and kill her in May 2013. The Bangor Daily News reports that Dubes ex-girlfriend Sarah Mersinger testified Monday that he told her he killed Nichole. Mersinger says Dube covered up Nicholes body with leaves and sticks. During an emotional testimony, she added: He told me that he strangled her at the end of her road. He said he put duct tape on her mouth, her eyes and on her hands and feet. Elaborate plot? Kyle Dube, 21, pictured left in court last week allegedly abducted Nichole Cable, 15, right in 2013 so that he could stage a rescue and be hailed as a hero. His ex-girlfriend has told a court he confessed to killing her and dumping her body in woodland in Bangor, Maine . He said he took her clothes off so the police dogs couldnt smell her. He said he covered her with sticks and leaves, so they couldnt see her from the sky. The court heard Mersinger would spend 18 or 19 days out of 21 at the house Dube shared with his parents and a four-year-old daughter from another relationship. Mersinger also told the jury that she had met Dube on Facebook, where they began messaging each other. They began dating in November 2012 but her mother didnt approve . Prosecutors say DNA evidence ties Dube to Nicholes disappearance. His attorneys say someone else killed the high school sophomore. Dube is pleading not guilty to abduction and murder, arguing that somebody else committed the crimes. During a court hearing last week, it was alleged Dube was intending to abduct her then stage a fake rescue so he could be hailed as a hero. According to the prosecution, the bogus account was traced to his home, his DNA was found on a hat at the end of Nicholes driveway and cell tower records show that he was in the area of Nicholes home. Accused: Prosecutors say Dube, pictured with his attorney during a hearing last Monday, left a hat with his DNA on it near Nicholes home . Defense attorney Wendy Hatch said last Monday that the state rushed to judge Dube, and she argued that someone else had committed the crimes. We are here to show you the state has holes in their case. They have mistakes, big mistakes, Hatch told the jury, adding that Dube got up the next morning, got dressed, kissed his daughter goodbye and went to work. Assistant Attorney General Donald Macomber said Dubes DNA was also found on Cables fingernails, and he had scratches on his face after she disappeared. He also said Dube alluded to the crime while having an emotional outburst as officers tried to calm him down while he reported to jail for an unrelated traffic offense. Dube responded it was what he had done, that they didnt know he had done, that he was worried about, Macomber said. Horrifying: The court heard Dube mugshot left covered Nicholes right body in leaves so she couldnt be seen from the sky and took her clothes off so police dogs couldnt smell her . The trial is expected to last two weeks and includes a witness list with more than 80 names. The case prompted discussions about the appropriate use of social media at the high school she attended in Old Town. Nicholes mother, Kristine Wiley, testified that she knew Dube as a friend of her daughters who came by their house two or three times before her disappearance. Between tears, she testified that Dube reached out to her with an offer to baby-sit her other children after Nichole vanished but before her body was found. Wiley said Dube first told her he had heard Wiley said he was responsible for Nicholes disappearance. Wiley said she denied the accusation and that Dube then told her if I needed anything, call and that he would watch her other children for her. She said she never took him up on the offer. Sorry we are not currently accepting comments on this article. 