You mentioned that you've been married for 14 years and you've just really started talking about sex. He may just not know how to communicate about it since you haven't really talked about it before.
Like Kramus said, maybe you should try talking to him on the internet first as it will allow him to think about his answers, put them down in writing, erase them, rewrite them then response(I do this all the time)
With enough gentle coaxing, he ought to come around, eventually I did in my relationship.