Do I want to be her or be with her?

So a few years back I got to know this girl and since then I’ve had a friend(?) crush on her. We never really got to be friends but recently my best friend started hanging out with her and so she kinda joined our friend group and lately I have been thinking a lot about her. Like in the caption I’m not sure if I just really like her vibe and think she is pretty and admire her or genuinely like her more than a friend. I’m also not even sure if I’m bi but I know she is. Also I’m like scared and nervous around her and I really want her to like me.