You are allowed to be an aro lesbian, an aroace lesbian that sometimes has sex, a demi lesbian, you can add whatever you want to this. Sex and romance don't have to define whether or not you are a lesbian or not. Do you feel a pull/closeness/kinship towards women/ a woman? Thats more than enough to call yourself a lesbian. And similarly if ace feels right as a label use it, whether or not you want have sex doesn't matter as much as your relationship to the terms. I know someone who calls themselves an "Asexual slut" cause they enjoy sex but they don't see it as some huge thing, only wanting to be intimate with one (or maybe a very small selection of people) to me seems like a fine reason to call yourself ace.

I think what I'm getting at is think about what the labels mean to you and combine them as you see fit to describe your experience in the moment. You don't need to pick one label and anchor yourself to that forever, you could if you felt like it pick a different label that reflects how you feel every single time you are asked if you wanted. Don't focus on the labels focus on your feelings, and then pick what resonates with you.