I have been through the same thing.  It is hard for people that don't have MS to understand what we are going through.  Although we cannot expect them to fully "get it" I do believe that if they care they should take the time to listen and try to be there.  You are a young beautiful woman that deserves true companionship.  Relationships should survive "in sickness and in health".  However if he is unable to provide you with enough support there is nothing wrong with seeking it elsewhere, like on a site such as this.  It breaks my heart to read that you feel all alone.  Please reach out to freinds, family and people in the community.  It is absolutely essential that you have a support system that extends beyond your relationship.  You DESERVE it!!  My thoughts are with you.