I think I might be a lesbian. How do I know?

Hey there! I'm a 16 year old girl, and I'm questioning whether I might be a lesbian. I don't really have any like, strong feelings of attraction towards men, but I've always felt sort of uncomfortable being around guys, so I assumed I was maybe asexual. But then I got this huge crush on a girl, and it's making me question that. I've had little crushes on girls before, but this is the first one where I actually want to date the girl. How do I know if I'm actually a lesbian, and how do I approach this?<br><br>EDIT: I have been to therapy, and they think I have autism and other special needs. They don't know for sure yet though. I didn't mention this before because it's not relevant. I'm asking for advice from women, not medical advice. I just want to know if this could be a part of it or not.