Chapter 14 questions please help

During their drive back to North Hills, Colville tells Reef that Jink, Scar, and Bigger are coming to visit him. Reef does not seem enthused: “The truth was, though, it didn’t feel okay, though he wouldn’t have let Colville know that. For some reason, the idea of seeing his friends again suddenly made him uneasy. Maybe it was because he hadn’t returned Scar’s calls. Yeah. That was probably it.” Why else would a visit from his old friends make Reef feel “uneasy”?

i need an answer for this question please!!!!!!