thats my guess too. If he had a heart, he would be distraught about his fiancee missing. An innocent man would insist upon their innocence. Motive, opportunity, uncooperative- he seems quite guilty to me. There is also that double homicide in Moab. Two young, cute girls slain, probably raped too- one who worked at store where Petito was fighting with. It sounds to me the guy snapped. And he sounds like a sociopath