( CNN ) -- `` We are innocent . '' For six years , that has been the cry that has united Amanda Knox and her Italian ex-boyfriend , as they have faced trials in the murder of Knox 's former roommate Meredith Kercher . But that unity may be crumbling , as she and Raffaele Sollecito prepare to appeal their convictions before Italy 's Supreme Court next year . Knox , who is living in the United States , appears to be sticking by the maxim . Just over two weeks ago , she posted it in a photo to her Facebook page in Italian : `` Siamo innocente . '' But Sollecito , who is still in Italy , no longer seems so adamant about it , as the prospect of a long prison term stares him in the face . He was sentenced to 25 , Knox to 28 years in prison . Yes , but . Though he still says that the evidence exonerates them both , he is using more selective language . `` There is nothing against me and nothing very strong against Amanda , '' Sollecito recently told CNN . `` And in my case , I really did nothing wrong , and I do n't want to pay for someone else 's peculiar behavior . '' Knox 's behavior on the morning Kercher was found stabbed to death in the apartment she and Knox shared seems to be a new hitch for Sollecito . That was early November 2007 , and he and Knox had only been dating for a week . Sollecito expanded on his doubts in a new interview with Italian television this week that aired in part on NBC . Knox had spent the night with him but went back to her place to shower , he said . When she returned , she was `` very agitated . '' She told him that it looked like someone had broken in and that there was blood in the bathroom , Sollecito said . But rather than call the police , she showered and returned to his place . He finds it odd , he now says . `` Certainly I asked her questions , '' he said . `` Why did you take a shower ? Why did she spend so much time there ? '' He did n't get any real answers from her , he said in the interview . Lawyer 's advice . Sollecito 's apparent distancing from Knox echoes the position of his lawyer , John Kelly . `` It 's imperative that the Italian courts consider Raffaele 's case separate from Amanda 's case , '' he said . `` By necessity , he has to distance himself and his case from Amanda and her case . '' In a note on her Facebook page , Knox acknowledges Sollecito 's new stance and appears to back it up . She said he 's a scapegoat . `` The only reason he has been dragged into this is because he happens to be my alibi , '' she wrote . Since Kercher 's death , Knox and Sollecito have gone through a legal odyssey that led to a conviction that was overturned , followed by a second conviction . Another man , drifter and drug dealer Rudy Guede from the Ivory Coast is currently serving 16 years for Kercher 's murder . He was tried separately from Knox and Sollecito . He admitted having sex with the young British woman but said someone else killed her while he was in the bathroom .
The united cry of innocence may be crumbling , as Raffaele slowly changes his tone . He finds Knox 's confession , the morning after she was found dead , odd . His lawyer insists that his case must be heard separately from hers . Sollecito still says the evidence exonerates them both .