If it was someone that Jason got to know at least somewhat well, then the potential angles to look at are the places he spent the most time outside his home: work and church. He spent at least 2 hours a week at church, sometimes even taking "extra" hours. I wonder if there was someone there who he got to know. His parents would never dare accuse anyone at the church, probably never even crossed their minds at all. Of course that murks up when you factor in the limited time he had for something to happen on his way to the school. Someone from the church would had to have had some communication with him that morning to know where he'd be. The search on his computer presumably didn't show any of that, and I'm assuming his phone records didn't either. An immediate neighbor would be tough to form a tryst with, as that is very close range and other neighbors could potentially have seen it. My guess is that if this was a grooming situation, it was likely one-sided. Jason might have thought he was making a confidant or "father figure", but got more than he bargained for. And maybe given Jason's age, it's possible that the perp wasn't seeing it as a grooming. Maybe they thought that Jason could have actually been interested (as opposed to a child who a predator knows they are simply manipulating) but then lashed out when it turns out Jason wasn't.