Amanda Knox boyfriend admits 'bizarre behaviour' in new book Sollecito's book, "Honor Bound," is due out Sept. The Associated Press news agency purchased a copy on Tuesday. In it, he describes how the early days of their relationship became a nightmare: the horror of Kercher's slaying; the misunderstandings that swept them up in the case; their tabloid portrayals as two suspects unrecognisable to themselves. Knox became "Foxy Knoxy" and received the brunt of the attention as she shopped for underwear after the killing and turned cartwheels in front of investigators. While police investigated the crime scene, Sollecito caressed her and they kissed, unaware of the television news cameras across the street. Later at the police station she climbed in his lap and draped her arms over him, making Sollecito uneasy, he said. Police found their behaviour "odd" and he acknowledged they had no "real alibi the night of Nov 1 except each other." Knox is also writing a book, due out next spring. Her deal, with HarperCollins, is reportedly worth $4 million. The couple were arrested several days after Kercher's death and later convicted in proceedings that made headlines around the world. Prosecutors portrayed the case as a drug-fuelled sexual assault, and Knox and Sollecito were sentenced to 26 years and 25 years, respectively. The appeals court found the prosecution's theory to be unsupported by any evidence. Prosecutors have appealed the acquittal, and Italy's highest court will hear their arguments next March. Sollecito frequently criticises the police for their handling of the case, reaching for a far-fetched conspiracy instead of the simpler explanation that Guide had on his own committed a burglary gone wrong. Rudy Guede watches during his appeal against the sentence he received in the Meredith Kercher murder trial, in Perugia December 22, 2009 (Reuters) Sollecito, then finishing his undergraduate studies in computer science, writes that he met Knox at a classical music concert at the Universita per Stranieri, the University for Foreigners, on Oct 25, 2007 - a week before Kercher's death. He asked for her number, and she told him to come by the bar where she'd be working later that night. At the end of the shift, he writes, they took a walk, held hands and kissed. She accepted an invitation to come back to his apartment and spent the night. Meredith Kercher died in November 2007 at Knox's apartment in Perugia, north of Rome Soon the couple became inseparable. She began spending the nights at his apartment. They shopped for groceries together, and took a sightseeing day trip to Assisi. Sollecito wrote about his first night in prison, saying he wavered between "great waves of indignation and a nagging sense of guilt." He said that while he knew he was innocent, he was angry at himself for having a foggy memory of the night of the killing because he and Knox had smoked marijuana. Amanda Knox and Raffaele Sollecito after their convictions were overturned in 2011 (AFP/Getty Images) When they were finally acquitted, Sollecito writes that he felt "indescribable joy." He remembers looking at the police, hoping to see them appear defeated, but they wouldn't look at him. He saw Knox sobbing, and they later had a private moment in the basement of the courthouse, waiting to be taken back to prison one last time. According to Sollecito, she squeezed his hand and said she couldn't wait to see her home and friends. Amanda Knox attends a news conference shortly after her arrival at Seattle-Tacoma International Airport in Seattle in October 2011 (AFP/Reuters) Knox moved back to Seattle. It's not clear where Sollecito is living.