Husband works full time and I am on SSDI and don’t need to file. Should he file married filing separately or do I have to file even though I’m not taxable.

Hi 

I am trying to figure out how to file. My husband works full time and I am on SSDI I don’t have to file. Can he file married filing separately or do we have to file jointly even though I’m not taxed and don’t need to file? Thanks so much! ❤️