I think I like this girl but I don't think I like her? Any advice?

I'm currently in high school and I have considered myself unlabeled for my sexuality and pronouns since middle school. I never really brought any attention to labels like sexuality and pronouns ect because it felt restricting, but I have always been open to all kinds of people. I have been in multiple relationships with one being a girl and a couple of guys.

For some background information, I had "dated" a girl in middle school who liked me and wanted to try out a relationship with me. I had told her I was unsure if I could reciprocate her feelings but I would be open to trying it out and we did. It went well but eventually, she fell out of those feelings and she moved on from me and we broke up with a clean slate. When we broke up I didn't harbor any strong feelings and got over it rather quickly, as if I had never even liked her. I'm not even sure I had a crush or developed feelings for her but when we were together it felt nice even after we broke up I wasn't angry or distraught I more or less just let it go and thought oh okay and moved on. Later when I got older I dated guys who were really sweet that I have been attracted to and have even asked out a couple but have still also never harbored any strong feelings after we broke up. I was attracted but got over it quickly.

Going back to the present day I have been friends with this girl for around 3 years now and I have never been attracted to her or have had any crush on her (I believe I haven't) But recently I've been thinking about how it would be nice if we were in a relationship and how I am slightly drawn about it (But I still harbor no attraction to her.) I am not sure if I even like girls at all or even guys. Could I get some advice? Do I like her, or do I not like her? I'm not sure.