I don't know if anyone will care, but I want to make an update anyway. It's been almost a year and I am much more sure about my identity now.
I think I can proudly say that I am aromantic bisexual. It really feels good to say (well, write, but anyway...) this, to have a label to identify with :)
What happened in this year? I did a lot more research and I let my feelings be my feelings. I also went on another date, or at least I think I did. We didn't call it that, but my family and friends were absolutely sure that the guy asked me out. Again, like the first time, the most prevalent feeling during the 3 hours that we talked was that I would like to be his friend. However, this time I was definitely attracted to the guy. Previously, the majority of this kind of attraction that I felt has been for fictional characters of both genders. Nothing of sexual nature happened on this maybe-date, but the guy confessed to be looking for a wife and future mother of his kids so I bailed as these are not the things I want from a relationship. (also he had a few really bad takes on gender roles and stuff, so it was just another reason to also bail on maybe staing friends with him)
I'm really glad I realised these things and that I am now comfortable to say them, at least online. Only my best friend knows I'm bi and I've started hinting at the aro thing. She is rethinking her identity as well, so it feels safer to talk to her about this.