Basically the problem is this:

My husband made a comment to me yesterday that suggests he isn't attracted to me due to (of all things) my hair cut.

A little bit of context:

When we met (and for several years following) I had long hair. Well, this year I've been trying out newer and shorter styles. I currently have a pixie cut. I love it, he does not. He told me yesterday that he likes long hair, period. He went on to say that he is unhappy with what he considers to be a tom-boy look. What makes it tom-boyish for him is the length, not the style.

I've already explained to him my reasons for the change including that my hair is thick and hard to manage when long, the fact that I am not one of those 40ish years old women who looks good with long hair, etc.

To me it seems so trivial but his comments told me that he no longer finds me attractive. How can we overcome this?