What is your reasoning for going maskless?
Mine is that a person I live with a lot has been going maskless. When I go out with them, I feel there’s no point in wearing a mask if they’re not going to. If they catch an illness we’re both going to regardless. I’ve been criticizing people in my head about no one wearing a mask, but I have to admit, now that I’ve been out without a mask I can see the temptation of things “feeling normal.”
You could look into getting a portable HEPA filter for where you live as well, these will help reduce risk of one of you infecting the other while at home. They aren’t as good as proper source control with a respirator is of course, but definitely are still helpful. When my roommate caught COVID, my wife and them were interacting in the same room before we knew they had it and could take stricter precautions, and neither of us were infected thankfully.