I would suggest married filing separately. As long as you don’t live together you are separated.
you can file separately whether you’re separated or not. If you have kids, file as Head of Household.
You have to be separated for 6 months or more to file head of household…
How do I need to file on my taxes if I have been separated since April of 2005? We do not have separation papers. Are we still considered legally separated in North Carolina?