I used to care what my spouse called me back when we were dating the first time around because we had trust issues, respect issues, communication issues, and weren't aligned in terms of what we meant to each other and what our future was.
So it felt very important to me what we called each other and there were a lot of hurt feelings and conflict about the subject.
Fast forward a few decades, many years apart, many years back together, enormous trust, respect, and alignment, and I couldn't care less what he calls me.
We look young, we don't have kids, I'm in grad school, we don't wear rings, and we live in a highrise filled with seniors and students who are renting, so no one assumes that we're married or that we own a place together, or any other indicator of our level of commitment.
In fact, people don't always assume that we're even a couple. They'll look at me and say "I was talking to your...boyfriend??...yesterday" because we could just be roommates for all people know.
We truly don't care what we are called or what people think or know about our relationship. Besides, if you spend any time around us, our level of commitment and mutual love and respect is incredibly self-evident. Because of that, a lot of people tell us we should get married, which is funny since we've been married for almost a decade.
Long story short, don't worry about what you call each other, worry about what you mean to each other.