Awkward friendship

I went to an exclusive all-girls school and had a classmate on high school who I just didnt understand well.

I was doing my best to keep up with her attitude because she had those unexpected episodes (I mean her mood swings) to being so buddy-buddy with me until minutes later she'll push me away, like bruh I dont know whats going on but please be clear with me...

Anyways,, since we were friends she'd tell me all sorts of stuff like how she like people until she told me she had a crush on me for like the second time (she confessed to me a while back too). And then she will say that the feelings were gone. I was okay with it.

But then for the next day she'll treat me like crap and then back to normal then repeat,, so ever since then I always felt awkward around her.