discussion title:
sexually incompatible fiance
I would not bet on this -- in my experience basic incompatibility issues -- like sexual incompatibility are more likely to get worse than better. And, don't you like how you are now? Why in the world would you hope your libido "calms down".
I did not address a sexual discrepency when I married 25 years ago -- and I think that it was a major mistake for me. I am divorced -- that was one of several significant reasons -- and there were other really significant problems -- that contributed to our inability to effectively function as a couple. Everyone is different, and I am sure you will receive other points of view. But, I view it as a real stone in the "marriage road" -- which is not always a very smooth road to begin with.
Good luck
Love 
