If you are compatible in many other ways, please see a counselor together. Maybe it will open things up. This happened to me in an otherwise good marriage. But if you don't get in sync in this area there is no point in getting married. You will only end up painfully divorced. I think it is possible to make this work but you both need to be open about discussing it and I strongly, strongly advise you to go together to counseling. Good luck.
PS And yes, you might also just not be compatible in this area. But it is a big area.