I think your term doesn’t change depending on your relationship
A bi woman loving a woman is not lesbian, she is bi.
Unless you haven’t already decided if you’re bi, pan, Omni, whatever, in that case
Idk
I know there are terms that are specific to one gender
And if you want to be a boy, then maybe straight?
I have used the term lesbian, even though I’m omniromantic, omnisexual, and omnigenderfluid
(yes, Omni is consuming my identity. Does it scare me? A little. Am I fine with it? Yes)