This, by a poster called Pyrrhiccomedy on Tumblr, is very wise. It’s in response to a question asking them whether they still identified as asexual; the questioner thought they were, but is with a new partner and feels different.
The words you put on your orientation are not elementally a part of you. They are tools, and as tools they should serve a function. That function can be to help you understand and categorize your own experiences and desires. It can be to help you find a community. It can be to help you get laid. It can just be to set social expectations. These words can be a revelation when you first apply them to yourself: they can be life-saving. But you are not beholden to them.