, first give yourself, as has already been said, a massive pat on the back followed by giving your boyfriend a pat on the back as well. When he asks why tell him how amazing he is for NOT being diagnosed with MS until now. I bet there were signs before now. You can also give him props for finding you. Think about it, you've already said it, you're sticking with him and then try to never mention this again. You've been provided with great information already but what helped me the most was not being treated different. Look, us with MS know we are "different" and will figure it out in time. Try not to attempt to "fix" his issue because, well, you can't but you can be there. You asked what you can do. Well behind the scenes a lot but he might not need you to do more, at first, than to be there after telling him your sticking, period. In time, suggest he get into a positive MS support group but on his own time. You can go with him to support him but he will need to go in his own time. What I remember after I was diagnosed was how much I missed the way it was until I realized it remained how it was with a couple of new things that I only could see. Let him know the chances of his worst fears coming true immediately are slim and to enjoy the ride that is life.