DEAR ANNIE: I need help proving I’m not a cheater. I’m not going to dog her, but I’ve been battling for four years with constant assumptions and accusations that I’m cheating on my girlfriend. She doesn’t understand that I’m a simple person. I’m scared to even approach another female. I don’t like to talk to anyone really; I don’t like people in general. We’ve been apart now for nine out of the last 12 months with probably 15 or so split-ups. If I had the extra cash, I would not hesitate to hire a polygraph consultant or something that can prove what I’m saying. I’m not a cheater and I haven’t…