I think fear is mostly what defines Dave at this point -- particularly that his fear lacks an outlet. From what we've seen of him and Azimio, I wouldn't say they're the best of buds. It seems more like a friendship forged out of shared space due to common grades and activities than anything else. Dave doesn't have anyone acting as a touchstone to diffuse his everyday fears, and as such his actions are becoming increasingly irrational in the face of paranoia. I predict some exciting happenings for the upcoming episode.