NJ and MD state taxes

[taxquestion2016]

I live and work in NJ and my wife lives and works in MD. I have income source in NJ and no income source in MD. My wife has income source in MD and no income in NJ. Can we use married filing jointly for our 2019 federal return and married filing separately for our NJ and MD state income tax return? If the advice is for us to use the same filing status on both federal and state for both MD and NJ and if we choose to use married filing jointly, will I have to pay MD taxes on my income earned in NJ and will my wife have to pay NJ taxes on her income earned in MD. Thank you in advance. Please don't answer my question using FAQ answers. NJ seemed to have a special situation which I don't understand very well, where is says the same staus has to be used for state and federal. Does this apply to residents with non resident spouses too?