Why did you stop?

I'm terribly worried now. In a way, I can't be all too sure that it isn't him that's going mad. He might be schizophreniac or something. He's always been so care free. At the same time, I can't send him back mails all the time. I'm frightened that it isn't some wild ranting from his brain. And I've been having a weird feeling that I'm being watched lately. And I don't like it at all.