Lori, is the fear a relatively new thing? It sounds like he's hit puberty and the rush of hormones, along with being a very perceptive kid, could have him acting this way.

I don't think I'd focus too much on the fear/anxiety in your reading, but focus more on the emotional & physical changes in a boy entering puberty. If the fear/anxiety seems out of line with that, then I think I'd consult an expert.