MEN! They are the biggest babies when sick!
Best thing IMO is to let it go. Let him have his "moment" of attention. Then when you get sick, start acting the same way and when he inevitably tell you that you're being ridiculous, call him out on it. I did this last fall when my husband had strep, then my son, then me. I did everything for the kids and him for 5 days while he lounged around and groaned, and even stated, (I swear this is a direct quote) "I don't think I'm gonna make it through this. I might die." Can you believe this? ha!
So, I did the same when the strep hit me, and he was so quick to tell me to get over it. I told him in my strongest strep throat voice as possible that paybacks were hell. :) Do I think he'll stop acting this way? No, but at least he knows now what a big crybaby he is. :) Good luck!