Now What?

How do you tell someone that loves you that they are not enough? My husband and I have totally different physical needs (I have them and he apparently does not). He is a decent person and good to me in many other ways and I feel like an ass for even feeling this way but I do, so now what? How can I fix a problem that he does not think needs fixing? He does not believe in an open marriage and I am having trouble remaining monogomous. So, now what? I really do not want to be divorced for a 2nd time and again I just keep coming back to "now what". Obviously, I do not have any answers and will have to consider all options (which are few and are steadily decreasing) so the question of the day is "now what?"