I Swear I See Them All The Time

Hey, eve! (: I'm just having a tough time right now. I can't seem to push the incident out of my head. I'm starting to see the guy's faces in random strangers. I couldn't dare get a second look because I was terrifed that it really WAS one of them. I really wasn't expecting my attack to affect me as much as it has, and because of the unexpected pain and residual affects nearly a year later I'm worried I'll never get over it. Has anyone here gone through something similar?