am I bi?

I’m 23, and up until last year, I was fully convinced I was straight. I’d have small, passing crushes on girls but never thought much of it.

Then last July, I met a "guy" online, only to find out a month later that she was actually a girl. Plot twist: I already liked her, and finding out she was a girl changed absolutely nothing for me. I was just like, "Whatever, it's still her." She courted me for a bit, but we had some issues and it ended.

It’s been 6 months and I still can’t get it out of my head. I kind of want to date a girl again, but now I’m questioning everything. Am I bi or just curious? I feel like I didn't get proper closure with my sexuality since things ended so abruptly. Help a girl out!