My crush unintentionally hurt my feelings?

[king]

Basically my crush is also my friend. She has known I like her for a year, and is cool with it. Recently I started using Instagram. My friend followed me and le crush was in her followers. I followed her and she followed me back about 2 minutes later. I was so happy. But about 10 minutes later she unfollowed me. I was so sad, I just unfollowed her. Myposts aren't private or anything, and she was just nice as usual in School. What should I do/ feel about this? I know I sound like a whiny idiot, but there is no worse feeling than this.

[Amber]

HAHAHAHAHAHAHAHAHAHAHAHAHA pussy ass boy

[A M]

Ask her why she did that?